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Impedance Triangle

A coil of sel...

Question

A coil of self-inductance $L$ and resistance $R$ is connected to a cell of emf $E$ volt. The value of current following in the circuit will be

\sqrt{\frac{E L}{R^{2} + L^{2}}}

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\sqrt{\frac{E}{R^{2} + L^{2}}}

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\frac{E}{L}

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\frac{E}{R}

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Solution

The correct option is D $\frac{E}{R}$
Inductance comes into play in the circuit only when a change in current occurs.
In steady state DC current only R decides the current along with the emf.

Therefore, current = $\frac{E}{R}$

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