The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate fr...

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The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from \( 10 \mathrm{~A} \) to
\( \mathrm{P} \)
\( 25 \mathrm{~A} \) in \( 1 \mathrm{~s} \), the change in the energy of the
W
inductance is
(1) \( 437.5 \mathrm{~J} \)
(2) \( 637.5 \mathrm{~J} \)
(3) \( 740 \mathrm{~J} \)
(4) \( 540 \mathrm{~J} \)
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