Electromagnetic Field Theory
Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true?

 An emf is induced in both coils.
 An emf is induced in split coil.
 Equal joule heating occurs in both coils.
 Joule heating does not occur in each of the coils.

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Electromagnetic Field Theory
A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

 less than that of disc and in the same direction.
 less than that of disc but in opposite direction.
 equal to that of disc and in the same direction.
 equal to that of disc and in the opposite direction.

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