Choose the correct option:

A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced cum changes once in each:


(a) two revolutions


(b) one revolution


(c) half revolution


(d) one-fourth revolution


When a rectangular coil of copper wires is rotated in a magnetic field, the direction of the induced cum changes once in each half revolution. Thus, option (c) is correct.


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