# Magnetism Class 10th Question Bank​

## Magnetism Class 10th Question Bank

### What is magnetism?

Magnetism is the property of materials that exert a force on other materials that have magnetic properties.

### What is a magnetic field?

A magnetic field is the region surrounding a magnet in which a magnetic force can be felt.

### What is the direction of the magnetic field?

The direction of the magnetic field is from the north pole of a magnet to its south pole.

### What is the unit of magnetic field?

The unit of magnetic field is Tesla (T).

### What is the difference between magnetic field and magnetic force?

The magnetic field is a region around a magnet where the magnetic force is exerted.

### What is the formula for the magnetic force on a charged particle moving in a magnetic field?

The formula for the magnetic force on a charged particle moving in a magnetic field is F = qvBsinθ, where q is the charge, v is the velocity, B is the magnetic field, and θ is the angle between v and B.

### What is the right-hand rule for magnetic fields?

The right-hand rule for magnetic fields states that if you point your right thumb in the direction of the velocity of a positively charged particle and your fingers in the direction of the magnetic field, your palm will face the direction of the magnetic force.

### What is an electromagnet?

An electromagnet is a magnet that is created when an electric current is passed through a coil of wire.

### What is the difference between a permanent magnet and an electromagnet?

A permanent magnet is always magnetized, while an electromagnet is magnetized only when a current flows through it.

### What is the principle of an electric motor?

The principle of an electric motor is that a current-carrying conductor placed in a magnetic field experiences a force, which causes it to rotate.

### What is the principle of a generator?

The principle of a generator is that a magnet moving through a coil of wire induces an electric current in the wire.

### What is the Faraday’s law of electromagnetic induction?

Faraday’s law of electromagnetic induction states that a changing magnetic field induces an electric field, which in turn induces an electric current in a conductor.

### What is Lenz’s law?

Lenz’s law states that the direction of an induced current is such that it opposes the change that produced it.

### What is eddy current?

Eddy currents are electric currents that are induced in conductors when they are exposed to a changing magnetic field.

### What is the transformer?

A transformer is a device that is used to change the voltage of an alternating current (AC) without changing its frequency.

### What is the formula for the transformer?

The formula for the transformer is V1/V2 = N1/N2, where V1 and V2 are the voltages of the primary and secondary coils, and N1 and N2 are the numbers of turns in the primary and secondary coils.

### What is hysteresis?

Hysteresis is the phenomenon where the magnetic properties of a material lag behind changes in the magnetic field.

### What is magnetic domain?

A magnetic domain is a region in a magnetic material in which the magnetic moments of the atoms are aligned in the same direction.

### What is a solenoid?

A solenoid is a coil of wire that is used to create a magnetic field when an electric current is passed through it.

### What is the magnetic moment?

The magnetic moment is a measure of the strength and direction of a magnet.

### What is the relation between magnetic moment and magnetic field?

The magnetic moment of a magnet is directly proportional to the strength of the magnetic field it produces.

### What is the Curie temperature?

The Curie temperature is the temperature at which a ferromagnetic material loses its magnetic properties.

### What is a magnetic material?

A magnetic material is a material that can be magnetized and will produce a magnetic field.

### What are the types of magnetic materials?

The types of magnetic materials are ferromagnetic, paramagnetic, and diamagnetic.

### What is the difference between ferromagnetic, paramagnetic, and diamagnetic materials?

Ferromagnetic materials are strongly magnetized, paramagnetic materials are weakly magnetized, and diamagnetic materials are not magnetized.

### What is the Earth’s magnetic field?

The Earth’s magnetic field is the magnetic field that surrounds the Earth.

### What causes the Earth’s magnetic field?

The Earth’s magnetic field is caused by the movement of molten iron in the Earth’s core.

### What is the geomagnetic field?

The geomagnetic field is the magnetic field that surrounds the Earth and extends into space.

### What is the Van Allen radiation belt?

The Van Allen radiation belt is a region in space where charged particles are trapped by the Earth’s magnetic field.

### What is a magnetic compass?

A magnetic compass is a device that uses a magnet to show the direction of magnetic north.

### What is a magnetic anomaly?

A magnetic anomaly is a deviation in the Earth’s magnetic field from its normal value.

### What is the magnetic declination?

The magnetic declination is the angle between magnetic north and true north.

### What is the magnetic inclination?

The magnetic inclination is the angle between the Earth’s magnetic field and the horizontal plane.

### What is a magnetic storm?

A magnetic storm is a disturbance in the Earth’s magnetic field caused by solar activity.

### What is a solar flare?

A solar flare is a sudden burst of energy on the Sun’s surface.

### What is a coronal mass ejection?

A coronal mass ejection is a massive burst of plasma and magnetic field from the Sun’s corona.

### What is magnetohydrodynamics?

Magnetohydrodynamics is the study of the interaction between magnetic fields and electrically conductive fluids.

### What is the magnetic reconnection?

Magnetic reconnection is a process in which magnetic field lines break and reconnect, releasing a large amount of energy.

### What is the solar wind?

The solar wind is a stream of charged particles that flows from the Sun’s corona into space.

### What is the magnetosphere?

The magnetosphere is the region around the Earth where the Earth’s magnetic field dominates over the solar wind.

### What is the aurora borealis?

The aurora borealis, also known as the Northern Lights, is a natural light display in the sky caused by charged particles from the Sun interacting with the Earth’s magnetic field.

### What is the aurora australis?

The aurora australis, also known as the Southern Lights, is a natural light display in the sky caused by charged particles from the Sun interacting with the Earth’s magnetic field in the southern hemisphere.

### What is a magnetic levitation train?

A magnetic levitation train, also known as a maglev train, is a train that uses magnetic levitation to float above the track and eliminate friction.

### What is a magnetic storage device?

A magnetic storage device is a device that uses magnetic fields to store and retrieve data, such as hard drives and magnetic tape.

### What is a solenoid?

A solenoid is a coil of wire that produces a magnetic field when an electric current is passed through it.

### What is an electromagnet?

An electromagnet is a magnet that is created by passing an electric current through a coil of wire.

### What is a magnetic field line?

A magnetic field line is a line that represents the direction and strength of the magnetic field at every point in space.

### What is a magnetic dipole?

A magnetic dipole is a pair of equal and opposite magnetic poles separated by a small distance.

### What is the right-hand rule for magnetic fields?

The right-hand rule for magnetic fields is a rule that determines the direction of the magnetic field around a current-carrying wire.

### What is magnetic hysteresis?

Magnetic hysteresis is the lagging of magnetic field intensity behind the magnetizing force in a magnetic material. It is the property of a ferromagnetic material to retain a certain amount of magnetism even after the removal of the magnetizing field.