Consider a magnet surrounded by a wire with an on/off switch S (Fig 6.4). If the switch is thrown from the off position (open circuit) to the on position (closed circuit), will a current flow in the circuit? Explain.



First understand magnetic flux whose formula is given by where B is magnetic field and A is area also we know that induced e.m.f. or induced current can flow when there is rate of change in magnetic flux()

In our question we can observe that area is constant also B is constant and θ is also not changing. Hence which means current will not flow in the circuit.


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