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 moving coil ammeter
- a D.C generator
-
a D.C electric motor
- An induction coil
- An A.C generator