Electric and Magnetic Forces

What is an electric force?

• The electric force is the force that exists between neutral particles.

• The electric force is the force that exists between magnetic particles.

• The electric force is the force that exists between charged particles.

• The electric force is the force that exists between gravitational particles.

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What is a magnetic force?

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

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

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

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

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What is the unit of electric charge?

• ampere

• coulomb

• volt

• ohm

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What is the unit of magnetic field strength?

• ampere (A)

• tesla (T)

• watt (W)

• volt (V)

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What is the SI unit of electric current?

• B.

• C.

• A

• D.

What is the SI unit of magnetic flux density?

• Tesla (T)

• Watt (W)

• Ohm (Ω)

• Ampere (A)

What is the direction of the electric field around a positive charge?

• Circular

• Tangential

• Radially inward

• Radially outward

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What is the direction of the magnetic field inside a solenoid?

• from east to west

• from north to south

• from west to east

• from south to north

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What is the relationship between electric current and magnetic field strength in a wire?

• The magnetic field strength is inversely proportional to the electric current in a wire.

• The magnetic field strength is not affected by the electric current in a wire.

• The magnetic field strength is equal to the electric current in a wire.

• The magnetic field strength is directly proportional to the electric current in a wire.

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What is the relationship between electric charge and electric force?

• Electric charge and electric force are directly proportional to each other.

• Electric force is unrelated to electric charge.

• Electric charge has no effect on electric force.

• Electric charge and electric force are inversely proportional to each other.

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