General Physics 2 LQ

What is electromagnetic induction?

• The process of generating mechanical energy from electrical current

• The generation of electric current in a conductor exposed to a changing magnetic field

• The conversion of magnetic energy into heat

• The process of creating static electricity in conductors

According to Faraday's First Law, when is an electromotive force induced in a wire?

• When the wire is stationary in a constant magnetic field

• When the wire is placed in a varying magnetic field

• When the wire carries a constant current

• When the wire is heated

Which factor does NOT affect the magnitude of induced EMF?

• Number of turns in the coil

• Speed of relative motion between coil and magnet

• Temperature of the conductor

• Strength of the magnetic field

What is the relationship between induced EMF and the rate of change of magnetic flux according to Faraday's Second Law?

• Inversely proportional

• Exponential

• Directly proportional

• Logarithmic

In a given problem, if a coil has 50 turns and the magnetic field changes from 0.2 T to 0.8 T, what is the change in magnetic field?

• 0.4 T

• 0.6 T

• 1.0 T

• 0.8 T

What distinguishes an electrostatic field from an induced electric field?

• Electrostatic fields arise from changing magnetic fields

• Electrostatic fields arise from charges in motion

• Electrostatic fields arise from stationary charges and don't change with time

• Electrostatic fields only exist in conductors

Which device's operation is NOT primarily based on electromagnetic induction?

• Generator

• Battery

• Transformer

• Electric motor

What happens to the induced EMF if the number of turns in a coil is doubled?

• It remains the same

• It decreases by half

• It doubles

• It quadruples

An induced electric field is created by:

• Static charges only

• Changing magnetic fields

• Constant magnetic fields

• Direct current

If the speed of relative motion between a coil and magnet increases, what happens to the induced EMF?

• Decreases proportionally

• Remains constant

• Increases proportionally

• Becomes zero