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Magnetism and Electromagnetism - Engineering

Q1:

The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is

A 1,000 V

B 2,000 V

C 31.25 V

D 3,125 V

ANS:B - 2,000 V

The induced voltage is a multiplication of a number of turns and rate of change of flux.

Hence,

V = Ndphi/dt,

V = 250*8.
V = 2000V.