PHYSICS · Subjective · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
A coil in a small d.c. motor is connected to a battery through two brushes.
(i) What happens to the direction of current in the coil immediately after the battery terminals are interchanged?
(ii) If the motor is fitted with a split-ring commutator, will the direction of rotation change after the terminals are interchanged? Give a brief reason.