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A: of electromagnetic induction
B: when a rectangular coil is placed in a magnetic field and current is passed through it, a force acts on the coil which rotates it continuously.
C: both A and B
D: None of the above
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Explanation:
In an electric motor the electrical energy is converted into the mechanical energy.
And the motor used the magnetic effect of the current.
It is saying that when a rectangular coil is placed in a magnetic field and current is passing through it then a force is exerted in the coil which rotates the coil.
Final Answer:
The option(B) is correct.
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