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SAT® Subject Test in Physics

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Moderate

Loop Entering Magnetic Field

SATPHY-GJQGJN

The diagram below shows a retangular wire loop moving at a constant velocity in the direction of the red arrow into a uniform magnetic field. The magnetic field is represented by the blue dots which show that the magnetic field points out of the page.

As the loop continues to move into the magnetic field, what happens in the wire loop?

A

Conventional current flows around the wire loop in a clockwise direction and has a constant value.

B

Conventional current flows around the wire loop in a clockwise direction and increases in value as the loop moves further into the magnetic field.

C

Conventional current flows around the wire loop in a counter-clockwise direction and has a constant value.

D

Conventional current flows around the wire loop in a counter-clockwise direction and increases in value as the loop moves further into the magnetic field.

E

No current flows in the wire loop.