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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.

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