Question 4 Choose the correct option. A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each (a) two revolutions (b) one revolution (c) half revolution (d) one-fourth revolution
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Solution
Correct Option: (c) When a rectangular coil of copper is rotated in a magnetic field, the direction of the induced current in the coil changes in every half rotation or revolution.