A coil having n turns and resistance R - is connected with a galvanometer of resistance 4R- - This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber- The induced current in the circuit is

I=e/R= N/R(ϕ_2 ϕ_1)/ t= n(W_2 W_1)/5Rt ...

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Standard XII

Physics

Lenz's Law

A coil having...

Question

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

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

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

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

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

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Solution

The correct option is B $- \frac{n (W_{2} - W_{1})}{5 R t}$
$i = \frac{e}{R} = \frac{- N}{R} \frac{(ϕ_{2} - ϕ_{1})}{△ t} = \frac{- n (W_{2} - W_{1})}{5 R t}$

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A coil having n turns and resistance R Ω is connected with a galvanometer of resistance 4RΩ . This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber. The induced current in the circuit is

The correct option is B −n(W2−W1)5Rti=eR=−NR(ϕ2−ϕ1)△ t=−n(W2−W1)5Rt

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

The correct option is B $- \frac{n (W_{2} - W_{1})}{5 R t}$
$i = \frac{e}{R} = \frac{- N}{R} \frac{(ϕ_{2} - ϕ_{1})}{△ t} = \frac{- n (W_{2} - W_{1})}{5 R t}$