5th Class General Science Chapter 7 Electricity and Magnetism MCQs (بجلی اور مقناطیس) | PakMCQs

Electric current is correct because it describes the flow of electricity that powers our homes and appliances.

Metal cables is correct because metals are good conductors that allow electricity to travel easily through wires.

Static electricity is correct as it refers to electric charges that stay in one place on the surface of an object.

Static electricity is correct because rubbing the comb against dry hair creates a charge that makes the hairs repel each other.

The comb has acquired charge is correct because friction between the hair and the comb transfers electrons, leaving the comb with static electricity.

Charge is correct because all matter consists of atoms containing charged particles (protons and electrons) as a fundamental characteristic.

Static electricity/Charge is correct because it involves the accumulation of electric charges on the surface of objects through friction.

Because it has acquired charge is correct because rubbing causes electrons to move, giving the comb an electrical property called charge that attracts light objects.

Charge is correct because it is a fundamental characteristic of matter, just like mass, which allows objects to experience electrical forces.

There was no charge is correct because most objects are electrically neutral until friction causes a transfer of charges between them.

Because they have acquired opposite charges is correct because in static electricity, unlike charges (positive and negative) create a force of attraction between objects.

Negative charge is correct because during rubbing, electrons move from the cloth to the balloon, making the balloon negative.

Positive charge is correct because the cloth loses some of its negative particles to the balloon, leaving it with a surplus of positive charge.

Two is correct because electricity is based on the interaction of exactly two kinds of charges: positive and negative.

Positive and Negative is correct because these are the two opposing electrical states that exist in all matter.

Due to rubbing with air is correct because the friction between moving air and water droplets in clouds generates static electricity.

One end becomes positive and the other negative is correct because the rubbing process separates the charges to different parts of the cloud.

A spark (Lightning) is correct because the jumping of huge amounts of charge between clouds creates a giant electric spark we see as lightning.

Static electricity is correct because lightning is the sudden discharge of built-up static charges from clouds.

Positive charge is correct because when one object gains electrons (negative), the other object loses them and becomes positive.

Same charges on hair repel each other is correct because all the hairs acquire the same positive charge, and like charges always push away from each other.

They repel each other is correct because both balloons acquire the same negative charge from the woolen cloth, and like charges push away from each other.

They repel each other is correct as it is a fundamental property of electricity where two positive or two negative charges always push each other apart.

They attract each other is correct because a positive and a negative charge create a force that pulls them toward one another.

Atom is correct because it is the basic building block of all matter and contains smaller subatomic particles like protons and electrons.

Electrons and protons is correct because these are the essential charged particles that make up the internal structure of an atom.

Positive charge is correct because protons are the subatomic particles located in the nucleus that define the positive nature of the atom's core.

Same amount of negative charge is correct because an electron carries a charge that is equal in strength but opposite in sign to a proton.

They are equal in number is correct because a stable atom has the same count of positive protons and negative electrons to stay balanced.

Because it has no charge is correct because the equal positive and negative charges inside the atom cancel each other out.

Electrons are transferred is correct because friction provides the energy for negative particles to move from one surface to another.

It becomes positively charged is correct because losing negative electrons leaves the material with more positive protons than electrons.

Negative charge is correct because having more electrons means the total negative charge outweighs the positive charge of the protons.

Switch is correct because it acts as a controller that completes or breaks the path for electricity to reach the toy's motor.

To supply energy for working is correct because cells store chemical energy and convert it into electrical energy to power the toy.

Two (Positive and Negative) is correct because a cell needs two distinct terminals to allow the flow of electrons through a circuit.

Excess of electrons is correct because the negative terminal is built to have a high concentration of negative charges ready to move.

Deficiency of electrons is correct because the positive terminal has fewer negative charges, creating a pull for electrons to flow toward it.

From negative to positive is correct because electrons naturally flow from the area of excess (negative) to the area of deficiency (positive).

Electric current is correct because it specifically refers to the continuous movement of charge through a conducting material.

Switch is correct because it allows us to easily open or close the circuit, thereby starting or stopping the electric current at our will.

Because electric current flows through it is correct because the closed switch completes the circuit, allowing energy to move through the bulb and turn it on.

Cell, bulb, switch, and wires is correct because these components must be connected in a loop to allow electricity to travel continuously.

A path of flow of current is correct because a circuit is the complete route through which electric charges can travel from one end to another.

Components of electric circuit is correct because these are the essential individual parts that make up a functioning electrical system.

To be a source of electric current is correct because the battery provides the necessary electrical energy to push charges through the circuit.

That current is passing through it is correct because the bulb only lights up when electric charges are successfully flowing through its filament.

It becomes CLOSED is correct because turning the switch ON completes the path, allowing electric current to flow through the entire circuit.

Open circuit is correct because an OFF switch creates a gap in the path, making the circuit incomplete so current cannot pass.

More than one cell is correct because a battery is formed by connecting two or more electric cells together to provide more power.

The bulb will still glow is correct because current can still flow through a simple bulb regardless of which way the battery is connected.

No, only through some materials is correct because materials differ in their electrical properties; some allow current to pass while others block it.

The bulb starts glowing is correct because a lighted bulb is a visual proof that electrical energy is successfully traveling through the components.

It cannot conduct current is correct because such materials have high resistance and prevent the flow of electrons through them.

All of the above is correct because to understand electricity, scientists test various metals, non-metals, and everyday objects like foils and rulers.

Conductors is correct because these materials allow electrons to flow through them easily, making them essential for electrical wiring.

Insulators is correct because these materials have high resistance and block the movement of electric charges.

Iron and Copper wires is correct because most metals are excellent conductors that facilitate the easy flow of electric current.

Insulators is correct because these non-metallic materials prevent electricity from passing through, making them safe to handle.

To avoid the danger of electric shock is correct because insulators stop the current from reaching our body, providing essential safety during use.

Plastic rod is correct because plastic is an insulator that protects the user from the heat and electricity of the metal iron.

For safety from current and heat is correct because handles made of wood or plastic do not conduct electricity or intense heat to our hands.

Plastic is an insulator that prevents shocks is correct because using plastic bodies for appliances reduces the risk of accidental electric shocks for users.

They are also conductors of heat is correct because most materials that allow electric current to pass, like metals, also allow thermal energy to travel through them easily.

Diamond is correct because it is a rare material that blocks electric current but is excellent at transferring heat energy.

By touching it with their lips is correct because a real diamond conducts heat away from the skin so fast that it feels very cold to the touch.

Fans, television, and refrigerators are correct because electricity is the primary energy source used to power modern household machines and appliances.

Fuse is correct because it is a safety device designed to protect the circuit and appliances from being damaged by excessive current.

For the safe use of electricity is correct as the fuse prevents electrical fires and device failure by breaking the circuit during a power surge.

It becomes too hot and melts is correct because thin wires have low tolerance for high current, causing them to heat up and liquify due to electrical energy.

The circuit breaks and current stops is correct because the physical gap created by the melted wire prevents electrons from completing their path.

Fuse is correct because it acts as a safety barrier that sacrifices itself by melting when the electricity level becomes dangerous.

To protect electrical appliances is correct because the fuse prevents expensive machines from burning out due to high voltage or short circuits.

Electric iron and washing machine is correct because high-power electrical devices need a fuse to manage safe energy consumption.

Getting an electric shock is correct because if a device has a fault, the metal body can become charged, causing electricity to pass through the human body.

It will blow immediately and stop current is correct because the fuse cuts off the power supply the moment it detects a fault, preventing injury.

Both the electric appliances and the person is correct because a fuse serves a dual purpose of saving equipment from damage and humans from shocks.

A limit is correct because every electrical appliance is designed to handle only a specific amount of current to function without burning.

According to current limit is correct because a fuse must be matched with the appliance's capacity to protect it effectively during a fault.

The fuse blows is correct because the thin wire inside it melts instantly to break the circuit and stop the dangerous flow of electricity.

The appliance is not damaged is correct because cutting off the electricity prevents the machine's internal parts from catching fire or burning.

Circuit breakers is correct as these are modern safety switches that automatically turn off during an electrical fault to protect the building.

They also work like fuse is correct because both devices share the same purpose of cutting off electricity during an unsafe power surge.

Tripping is correct because it refers to the automatic flipping or switching off of the circuit breaker when it detects an electrical problem.

Do not touch with wet hands or bare footed is correct because moisture and direct contact with the ground increase the risk of a fatal electric shock.

By using fuse or circuit breakers is correct because these safety devices cut off the power before a short circuit can generate enough heat to cause a fire.

Magnet is correct because it is a material that produces a magnetic field, which pulls on other ferromagnetic materials like iron.

Ability to attract some materials is correct because magnets exert a physical force that brings specific metallic objects closer to them.

Magnetic materials is correct because these substances have properties that allow them to respond to a magnetic field and be pulled toward a magnet.

Iron, Nickel, and Cobalt is correct because these specific metals are naturally susceptible to magnetism and are easily attracted to magnets.

Steel pins and iron nails is correct as they contain iron and steel, making them highly reactive to the force of a magnet.

Non-magnetic materials is correct because these substances do not have the internal structure required to be influenced by a magnetic field.

Copper, wood, and plastic is correct because these materials do not respond to magnets and cannot be pulled by them.

Only magnetic materials is correct because only substances like iron or nickel have atoms that can align to form a permanent or temporary magnet.

Greeks is correct because historical records show that they were the first to identify the magnetic properties of certain naturally occurring rocks.

Lodestone is correct because it is a naturally magnetized piece of the mineral magnetite that attracts iron.

Natural magnet is correct as lodestone occurs in nature with magnetic properties already present, without human manufacturing.

It does not rest in any specific direction is correct because non-magnetic objects like a pencil are not influenced by the Earth's magnetic field.

North-South direction is correct because a suspended magnet aligns itself with the magnetic poles of the Earth.

North pole is correct because the end of the magnet that seeks the geographic north is specifically named after that direction.

South pole is correct because the magnetic end that consistently faces southwards is identified as the south-seeking pole.

Two is correct because every magnet consists of exactly two opposing ends known as the north and south poles.

Magnetic poles is correct because these are the two regions at the ends of a magnet where the magnetic force is strongest.

Red is correct because it is the standard color used in laboratories and schools to help students easily identify the North pole of a magnet.

Blue is correct because magnets are color-coded, with blue representing the South pole to distinguish it from the North pole.

The magnetic poles (ends) is correct because most iron filings stick to the ends, proving that magnetic force is concentrated at the poles.

They repel each other is correct because bringing the same poles together creates a pushing force between them. This property is known as repulsion.

Repulsion is correct as two identical poles (South-South) will always push each other away according to magnetic laws.

They attract each other is correct because unlike poles create a pulling force that brings the two magnets together.

At the magnetic poles is correct because the concentration of magnetic field lines is highest at the ends of the magnet.

Two like magnetic poles repel each other is correct as it is a fundamental property of magnetism that similar poles cannot stay together.

A huge bar magnet is correct because the Earth generates its own magnetic field, which affects magnetic objects just like a solid bar magnet would.

The Earth's magnetic force is correct because the Earth compels any freely rotating magnet to align with its own North-South magnetic poles.

North-South direction is correct because a magnet naturally settles along the Earth's magnetic axis, pointing towards the geographic poles.

North-South direction is correct because the Earth's magnetic field lines run between the poles, acting as if a massive magnet is buried along that axis.

Opposite poles near each other is correct because magnets always seek to pair North with South due to the law of magnetic attraction.

By rubbing it with a strong magnet is correct because the friction helps align the domains inside the needle, making it a temporary magnet.

So that it can move freely is correct because a magnet needs to rotate without friction to align itself with the Earth's magnetic field.

Yes, it returns to the same direction is correct because the Earth's magnetic force constantly pulls the needle back to its north-south alignment.

To find directions at any place is correct because a magnetic compass uses its needle to help travelers identify North, South, East, and West.

On a table or ground is correct because a flat, stable surface allows the needle to settle correctly in the north-south direction.

Other magnets or iron objects is correct because these materials interfere with the Earth's magnetic field and cause the needle to give a wrong reading.

Rotate the compass until the needle aligns with 'N' is correct because once the needle matches the North mark on the dial, all other directions on the compass become accurate.

A magnetic chip is correct because it uses magnetism to store encrypted information that can be read by machines like an ATM.

Read the data in the magnetic chip is correct because the machine decodes the magnetic signals on the card's chip to identify the user and perform transactions.

Three is correct because magnets are categorized into temporary magnets, permanent magnets, and electromagnets based on how they hold their magnetic force.

Temporary, Permanent, and Electromagnet is correct because these three terms describe the primary ways magnets are classified in science.

Because the first nail has become a magnet is correct because the magnetic force of the bar magnet turns the nearby iron nail into a temporary magnet.

It collapses and nails fall down is correct because iron loses its magnetic properties quickly once the external magnetic source is removed.

Steel is correct because unlike iron, steel can keep its magnetic strength even after the original magnet is taken away.

Temporary magnets is correct because iron does not hold magnetic force for a long time without an external influence.

Permanent magnets is correct because steel is an ideal material for creating long-lasting magnets used in many devices.

Yes, it is possible is correct because electricity flowing through a wire creates a magnetic field around it, which can magnetize certain materials.

Closely over an iron nail to form a coil is correct because winding the wire into a coil concentrates the magnetic field produced by the electric current.

A battery and a switch is correct because the battery provides the electrical energy, and the switch allows us to control the current flow.

The nail does not attract them is correct because without electric current, there is no magnetic field to pull the metallic pins.

The nail attracts the steel pins is correct because the flow of electricity turns the iron nail into a magnet that can pull magnetic materials.

It loses its magnetism is correct because an electromagnet only functions as long as there is a continuous supply of electricity.

Electromagnet is correct as it is a type of magnet where the magnetic field is produced by an electric current.

Because it loses magnetism when current stops is correct because unlike permanent magnets, its power can be turned on and off with electricity.

The poles also change (reverse) is correct because the direction of the magnetic field depends on the direction of the electric current.

By lifting iron objects easily using an electromagnet is correct because the powerful electromagnet on the crane attracts and holds heavy iron scrap when current is applied.

By switching OFF the electric current is correct because stopping the electricity makes the electromagnet lose its pull, releasing the objects.