In a coil, rate of change of area is \( 5 \mathrm{~m}^{2} / \mathrm{ms} \) and current becomes \...

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In a coil, rate of change of area is \( 5 \mathrm{~m}^{2} / \mathrm{ms} \) and current becomes \( 1 \mathrm{~A} \) form \( 2 \mathrm{~A} \) in \( 2 \times 10^{-3} \mathrm{~s} \). If magnetic field is \( 1 \mathrm{~T} \), then self-inductance of the coil is
(A) \( 2 \mathrm{H} \)
(B) \( 20 \mathrm{H} \)
(C) \( 5 \mathrm{H} \)
(D) \( 10 \mathrm{H} \)
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