If emf induced in a coil is \( 2 \mathrm{~V} \) by changing the current in it from \( 8 \mathrm{...

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If emf induced in a coil is \( 2 \mathrm{~V} \) by changing the current in it from \( 8 \mathrm{~A} \) to \( 6 \mathrm{~A} \) in \( 2 \times 10^{-3} \mathrm{~s} \), then the coefficient of self-induction is
\( \mathrm{P} \)
(1) \( 2 \times 10^{-3} \mathrm{H} \)
(2) \( 10^{-3} \mathrm{H} \)
(3) \( 0.5 \times 10^{-3} \mathrm{H} \)
(4) \( 4 \times 10^{-3} \mathrm{H} \)
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