if a large copper sheet C is placed between the two coils how does the induced EMF in the coil A changes due to current in the coil B
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Answer : In in the absence of copper sheet induced e.m.f. will be produced in the coil A due to mutual induction between coils A and B. As a result , Voltmeter will show deflection depending upon the magnitude of the induced e.m.f.
When the copper sheet is placed between the two coils, eddy currents will be set up in the coil since the eddy Currents have opposite effect the magnetic flux linked with coil A due to eddy currents will always be opposite to that due to the alternating current through the coil B. Hence induced e.m.f. will get reduced.
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