Physics Grade 1 Quiz: Magnetic Circuits and Magnetic Force

What is a magnetic field?

• A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

• A type of field where crops are grown using magnets

• The area around a magnet where there is no force of magnetism

• A type of force that repels all magnetic materials

How is a magnetic field created?

• By the temperature of the environment

• By the rotation of the Earth

• By the movement of electric charges

• By the movement of sound waves

What is magnetic flux?

• The force of attraction between two magnets

• The speed at which a magnetic field moves through a material

• Measure of the total magnetic field that passes through a given area

• The amount of electricity generated by a magnetic field

How is magnetic flux calculated?

• By adding the magnetic field strength and the area

• By subtracting the magnetic field strength from the area

• By dividing the magnetic field strength by the area

• By multiplying the magnetic field strength by the area through which it is passing and the cosine of the angle between the magnetic field and the normal to the area.

What is permeability in the context of magnetic circuits?

• The temperature at which a material becomes magnetic

• The force exerted by a magnetic material

• Ability of a material to allow the flow of magnetic flux

• Inability of a material to allow the flow of magnetic flux

How does permeability affect the magnetic circuit?

• It increases the resistance to magnetic flux

• It affects the ease of magnetic flux passing through a material.

• It decreases the strength of the magnetic field

• It has no effect on the magnetic circuit

What is a magnetic circuit?

• A path followed by electric flux

• A path followed by magnetic flux

• A path followed by water flow

• A path followed by sound waves

How is a magnetic circuit different from an electric circuit?

• Magnetic circuit has no difference from an electric circuit.

• Magnetic circuit deals with electric resistance, while electric circuit deals with magnetic force.

• Magnetic circuit deals with magnetic flux, while electric circuit deals with electric current.

• Magnetic circuit deals with electric current, while electric circuit deals with magnetic flux.

What is magnetic force?

• The force exerted by a magnetic field on a stationary electric charge.

• The force exerted by a magnetic field on a non-metallic object.

• The force exerted by a magnetic field on a moving electric charge.

• The force exerted by a magnetic field on a gravitational force.

How is magnetic force related to the magnetic field and the charge of the particle?

• Not related at all

• Inverse proportional

• Directly proportional

• Depends on the temperature