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A coil having n turns and resistance $R Ω$ is connected with a galvanometer of resistance $4 R Ω$ . This combination is moved in t second from field $W_{1} to W_{2}$ weber. The induced current in circuit is :

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\frac{n (W_{2} - W_{1})}{5 R t}

\frac{W_{2} - W_{1}}{5 R n t}

\frac{n (W_{2} - W_{1})}{R t}

\frac{(W_{2} - W_{1})}{n R t}

answer is A.

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Detailed Solution

i = \frac{NBA}{(R_{1} + R_{2}) t} = \frac{n (W_{2} - W_{1})}{5 R t}

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