NCERT Solution for Class 10 Science Chapter 13
Magnetic Effects of Electric Current
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-233
Questions No-3
What is the role of the split ring in an electric motor?
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The split ring in the electric motor acts as a commutator. The commutator reverses the direction of current flowing through the coil after each half rotation of the coil. Due to this reversal of the current, the coil continues to rotate in the same direction.
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The split ring in the electric motor is a commutator. The commutator reverses the direction of current flowing through the coil after each half rotation of the coil. Due to this direction of current getting reverse, the coil continues to rotate in the same direction.
In an electric motor, after every half rotation the direction of coil gets reversed due to change in orientation of the magnetic field. To ensure a continuous rotation; a split ring is attached to the coil so that the polarity of the coil changes after every half rotation. This changes the direction of current and thus the armature keeps on rotating continuously.
In an electric motor, the split ring acts as a commutator. Due to its action, the direction of current flowing in motor coil reverses after every half turn, giving rise to a continuous rotation of the coil and the axle.