Question

The device which contains slip rings to reverse the direction of current through coil is called

• A. resistor
• B. battery
• C. electric motor
• D. solenoid

Answer 1

The Correct Option is C

An electric motor is the device that uses slip rings to reverse the direction of current through the coil. This reversal of current direction is essential for the continuous rotation of the motor. The slip rings are part of the commutator system within the motor, which serves to periodically reverse the current direction in the coil as it rotates. This ensures that the torque acting on the coil always acts in the same rotational direction, facilitating the motor's operation.

Answer 2

In an electric motor, slip rings are used to reverse the direction of current through the coil after every half rotation. This reversal is essential to keep the torque acting in the same direction, so the coil continues to rotate smoothly.

Slip rings are circular conducting rings connected to the ends of the rotating coil and help maintain continuous contact with the external circuit via brushes.

Correct Answer: Electric motor