A coil of \( \mathrm{L}=5 \times 10^{-3} \mathrm{H} \) and \( \math...

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A coil of \( \mathrm{L}=5 \times 10^{-3} \mathrm{H} \) and \( \mathrm{R}=18 \Omega \) is abruptly
\( \mathrm{P} \) supplied a potential of 5 volts.

W
What will be the rate of change of current in 0.001 second? \( \left(\mathrm{e}^{-3.6}=0.0273\right) \)
(1) \( 27.3 \mathrm{amp} / \mathrm{sec} \).
(2) \( 27.8 \mathrm{amp} / \mathrm{sec} \).
(3) \( 2.73 \mathrm{amp} / \mathrm{sec} \).
(4) \( 2.78 \mathrm{amp} / \mathrm{sec} \)
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