1.

Choose the corret option : A rectangular coil of copper wires is rotatedin a magneticfield . The directionof theinduced currentchanges once in each ……

Answer»

two ROTATIONS
one rotation
HALF rotation
one- fourth rotation .

Solution :After each halfrotation , the directionof motion of the two PARALLEL sides of the coil (AB and CD) is reversed and so the DIRECTION of the induced currentchangesoncein each half rotation .


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