Physics
WAEC 1994
A rectangular coil can rotate in a magnetic field. The two ends of the coil are soldered respectively to the two halves of a commutator. Two carbon brushes are made to press lightly against the commutator and when these are connected in a circuit with a battery and a rheostat, the coil rotates. This is a description of
-
A.
a moving coil ammeter
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B.
a D.C generator
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C.
a D.C electric motor
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D.
An induction coil
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E.
An A.C generator
Correct Answer: Option C
Explanation
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