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JEE Main 2007
Exam
JEE Main
Year
2007
Subject
Physics
Chapter
Electromagnetic Induction

JEE Main 2007 · Physics · Electromagnetic Induction

An ideal coil of 10 H is connected in series with a resistance of 5...

An ideal coil of 10H10 \mathrm{H} is connected in series with a resistance of 5Ω5 \Omega and a battery of 5 V5 \mathrm{~V}. 22 second after the connection is made the current flowing in amperes in the circuit is

Options

  1. A(1−e)(1-\mathrm{e})
  2. Be\mathrm{e}
  3. Ce−1\mathrm{e}^{-1}
  4. D(1−e−1)\left(1-\mathrm{e}^{-1}\right)

Correct answer

D. (1−e−1)\left(1-\mathrm{e}^{-1}\right)

Step-by-step solution

i=i0\mathrm{i}=\mathrm{i}_0\left(1-\mathrm{e}^{\frac{\mathrm{Rt}}{\mathrm{L}}}\right)=(1−e−1)=\left(1-\mathrm{e}^{-1}\right)
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