A rectangular coil can rotate in a magnetic fie... - WAEC Physics 1994 Question
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
B
a D.C generator
C
a D.C electric motor
D
An induction coil
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Correct Option: C
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