On which of the following principles does an electric motor run?

Options :
  1. Electrical energy can be converted into chemical energy in the presence of magnetic fields.
  2. A conductor carrying current in the direction perpendicular to the external magnetic field feels a force.
  3. The current flowing through a conductor causes generation of heat that drives the engine.
  4. Changing magnetic field induces an electromotive force in a conductor.
Answer and Explanation :-

Answer: Option 2


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