13. A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current
camges once in each
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(C) half revolution
The direction of the induced current varies once every half revolution when a rectangular coil is rotated in a magnetic field.
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The current induced by magnetic field in the rectangular coil made up of copper wire is being turned in order to rotate in magnetic field, at every turn, the direction of induced current changes and being vector quantity, induced current changes every half revolution.
Explanation:
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