Question

A rigid, conductive loop is falling through a uniform magnetic field that is perpendicular to the plane of the loop. Initially, the loop is completely within the field, but then it falls into a region where no magnetic field is present. Which one of the following quantities varies during the fall?

the current in the loop

all of the above

the area of the loop penetrated by the magnetic field

the magnetic flux

the magnetic field penetrating the loop

Which one of the following choices will damp oscillations in an LC circuit?

increase the circuit resistance

increase the inductance

increase the capacitance

increase the emf

Answer 1

When A rigid, conductive loop is falling through a uniform magnetic field that is perpendicular to the plane of the loop, then the change in magnetic flux leads to change in  the current in the loop.

In addition to this; the area of the loop penetrated by the magnetic field and the magnetic field penetrating the loop changes.

Correct option: All of the above.

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Damped oscillations in an LC circuit increase the circuit resistance.