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Question: Answered & Verified by Expert
An e.m.f. of 5 volt is produced by a self inductance, when the current changes at a steady rate from $3 A$ to $2 A$ in 1 millisecond. The value of self inductance is
PhysicsElectromagnetic InductionJEE Main
Options:
  • A Zero
  • B $5 \mathrm{H}$
  • C $5000 \mathrm{H}$
  • D $5 \mathrm{mH}$
Solution:
1191 Upvotes Verified Answer
The correct answer is: $5 \mathrm{mH}$
$L=\frac{e}{d i / d t}=$ $\frac{5}{3-2) / 10^{-3}}=\frac{5}{1} \times 10^{-3}=5$ milli henry

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