SAT Subject Physics Practice Question 566: Answer and Explanation

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Question: 566

7. Which of the following methods can be used to induce a voltage into a coil of wire?

A. Rotating a magnet around the coils of wire
B. Passing a magnet through the center of the coils of wire
C. Rotating the coil of wire in a magnetic field
D. Changing the strength of the magnetic field applied to the wire
E. All of the methods listed can be used to induce current into a coil of wire.

Correct Answer: E


The correct answer is (E). All of the methods listed cause the wire to move through the magnetic field or lines of force, which induces a voltage into the wire.

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