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A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is
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a
four times per revolution
b
six times per revolution
c
once per revolution
d
twice per revolution
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Correct option is D
when the disc is rotating if first one fourth of rotation flux increases then next next one fourth of rotation flux decreases and so on.Talk to our academic expert!
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The direction of induced current in the coils A and B in the coils A and B is the situation shown in the figure is
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