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Electric Generator

Flux associat...

Question

Flux associated with coil of unit area placed int he magnetic field of induction $B$ is doubled in $0.2 s$ . The emf induced in the coil is:

A

5 V

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B

10 B V

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C

5 B V

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D

10 V

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Solution

The correct option is A $5 V$
Flux associated with coil of unit area placed in the magnetic field of induction B
Using Faraday's law
$E M F = N \frac{d ϕ}{d t} = \frac{1}{0.2} E M F = \frac{10}{2} = 5 V$

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