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Using Lenz's Law

The magnetic ...

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

Induced emf = $\frac{n d Φ}{d t}$ ;
where n is number of turns and Φ is flux
induced emf = $\frac{100 \times 5 \times 10^{-} 3}{5}$ = 0.1V

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