alleryIn an electric generator, mechanical energy is used to:
ARepel a magnet from a coil
BRecharge a cell inside a case
CReverse a switch on a board
DRotate a conductor in a field
Answer & Solution
Correct answer: D. Rotate a conductor in a field
1. A generator works on electromagnetic induction.
2. Mechanical energy rotates a conductor in a magnetic field to produce electricity.
3. The rotating rectangular coil sits between the poles of a permanent magnet.
_Source: syllabus Science, Ch 13 'Magnetic Effects of Electric Current'_
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