Physics
What is an electric motor? State it's principle.
Electro-Magnetism
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Answer
An electric motor is a device which converts the electrical energy into the mechanical energy.
Principle — An electric motor (dc motor) works on the principle that on passing electric current through a conductor placed normally in a magnetic field, a force acts on the conductor as a result of which the conductor begins to move and thus mechanical energy (or work) is obtained.
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