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प्रश्न
State the function of a split ring in D.C. motor.
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उत्तर
When the coil of a D. C motor turns through 180°, the split ring reverses the direction of the current in the coil from CBAD to DABC.
In this way, the coil continues to rotate continuously in the same direction and positive and negative polarities are maintained.
संबंधित प्रश्न
The diagram shows a coil wound around a U shape soft iron bar AB.
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2) Suggest one way to strengthen the magnetic field in the electromagnet
3) What will be the polarities at A & B if the direction of current is reversed in the circuit?
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Electromagnet ______.
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(ii) Name the law which helped you to find the direction of the magnetic field lines.
