Magnetic flux linked with the conducting loop "A" is increased at the rate of 15 weber/second per and another conducting loop "B" is decreased at the rate of 15 weber/second, the ,magnitude of induced emf of:

Explanation

The induced EMF in a loop is directly proportional to the rate of change of magnetic flux through the loop, as described by Faraday's law of electromagnetic induction. In this case, Loop A is having its magnetic flux increased at a rate of 15 weber/second, while Loop B is having its magnetic flux decreased at the same rate of 15 weber/second. Therefore, both loops will experience an induced EMF of equal magnitude but opposite direction. This leads to the conclusion that Loop A will have an induced EMF equal to that of Loop B. Option B is incorrect because the size of the loops does not affect the induced EMF in this context. Option C is similarly incorrect for the same reason. Option D is incorrect because both loops are experiencing changes in magnetic flux, resulting in non-zero induced EMF.