PH-314

Electromagnetic induction

Physics · Secondary 3 · Hard · Electromagnetic induction

In a simple generator, the magnetic flux through each turn of the coil changes by the same amount every revolution. In setup X, the coil makes 1 revolution in

0.40\,\text{s}

. In setup Y, it makes 1 revolution in

0.10\,\text{s}

. According to Faraday’s law, how does the induced e.m.f. in Y compare with that in X?

The induced e.m.f. in Y is one-quarter of that in X
The induced e.m.f. in Y is twice that in X
The induced e.m.f. in Y is four times that in X
The induced e.m.f. in Y is the same as in X

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