Question

Two identical loops, one of copper and the other of aluminium, are rotated with the same angular speed in the same magnetic field. compare (i) the induced emf and (ii) the current produced in the two coils. justify your answer.

Answer 1

1.    The induced EMF is known to be dependent on the magnetic field and on the angular frequency of rotation. Since, the magnetic field and the angular speed are same for both the loops, the induced EMF is assumed to be same for both the copper and aluminum loops.

2.    Copper is known to be more resistant that aluminum towards an induced current. Therefore, the induced current will be more in the copper loop when compared to the aluminum loop.

 

Answer 2

Answer:

1.    The induced EMF is known to be dependent on the magnetic field and on the angular frequency of rotation. Since, the magnetic field and the angular speed are same for both the loops, the induced EMF is assumed to be same for both the copper and aluminum loops.

2.    Copper is known to be more resistant that aluminum towards an induced current. Therefore, the induced current will be more in the copper loop when compared to the aluminum loop.

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