An a.c. generator having a constant magn...

An a.c. generator having a constant magnetic field is conneted to a resistive load. What will be the effect of doulbling the speed of rotation on: (i) frequency of a.c. (ii) generated e.m.f. (iii) mechanical power required to rotate the generator ?

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When the speed of rotation of a coil is doubled, the frequency of rotation and emf both will be doubled.

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