PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
In a simple d.c. motor with a split-ring commutator, what happens to the direction of rotation if the connections of the battery are reversed while the motor is running?
(a) The motor stops immediately and cannot start again
(b) The direction of rotation remains unchanged
(c) The direction of rotation reverses
(d) The motor alternately reverses direction after every half-turn