Physics PYQ 231 of 288 · Magnetism

In electrical motor :

  1. AHeat is converted into electrical energy
  2. BElectrical energy is converted into heat
  3. CElectrical energy is converted into mechanical energy
  4. DMechanical energy is converted into electrical energy
  5. ENone of the above/More than one of the above

64th BPSC Prelims 2018

Show answer and explanation

Correct answer: (c) Electrical energy is converted into mechanical energy

Explanation

An electric motor turns electrical energy into mechanical energy. A coil carrying current in a magnetic field feels a force and turns (Fleming's left-hand rule).

A generator (dynamo) does the reverse: it turns mechanical energy into electrical energy.

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