A rectangular coil can rotate in a magnetic field. The two ends of the coil...
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
- B. a D.C generator
- C. a D.C electric motor
- D. An induction coil
Correct Answer: C. a D.C electric motor
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