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Standard XII

Physics

Alternating Current Applied to an Inductor

An inductor o...

Question

An inductor of inductance $2.0$ $H$ and a resistor of resistance $10$ $Ω$ are connected senes to a battery of EMF $20$ $V$ in a circuit as shown.The key $K_{1}$ been kept closed for a long time. Then at $t$ = $0$ , $K_{1}$ i s opened and key $K_{2}$ is closed simultaneously, The rate of decrease of current in the circuit at $t$ = $1.0 s$ wili be ( $e^{5}$ = $150$ )

\frac{1}{15}

A / s

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\frac{2}{15}

A / s

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\frac{1}{5}

A / s

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\frac{4}{15}

A / s

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Solution

The correct option is A $\frac{1}{15}$ $A / s$

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Similar questions

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The correct option is A 115 A/s

The correct option is A $\frac{1}{15}$ $A / s$