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CBSE Class 9 Answered

How is work done in case of motor?
Asked by | 29 Dec, 2012, 10:47: AM
answered-by-expert Expert Answer

When a current carrying conductor is placed in an external magnetic field, it experiences a force. This is the basic working principle of a DC motor.

The commonly used DC motor consists of a permanent magnet stator and wound armature rotor. Power supply is given to the motor by split ring commutator. When the current flows through the armature, the armature produces a magnetic field around it. This field will be opposing the field generated by the permanent magnet. Therefore, the armature rotates.

Answered by | 30 Dec, 2012, 11:43: PM

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