A rectangular coil of wire can rotate in a magnetic field. The ends of the...
PHYSICS
WAEC 1990
A rectangular coil of wire can rotate in a magnetic field. The ends of the coil are soldered to the two halves of a split ring. Two carbon brushes are made to press lightly against the split ring and when these are connected in circuit with a battery and rheostat, the coil rotates. This is a description of
- A. a suspended- coil vanometer
- B. a moving-cell ammeter
- C. a d.c generator
- D. an electric motor
Correct Answer: C. a d.c generator
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