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Question
The magnetic flux through a coil having 100 turns decreases from 5 milli weber to zero in 5 second. Calculate the e.m.f. induced in the coil.
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Solution
Given that:
Decrease in the flux = 0.005 - 0 = 0.005 weber,
Number of tuns = 100 turns and
Time = 5 second
e.m.f. induced e = N × Rate of increase of magnetic flux
`= 100 xx 0.005/5`
∴ e.m.f. induced e = 0.1 V
= 100 mV
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