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Electromagnetic Induction — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectromagnetic Induction1 Mark
MCQ
A varying current in a coil changes from $10 \mathrm{amp}$ to zero in $0.5 \mathrm{sec}$. If average EMF is induced in the coil is $220$ volts, the self inductance of coil is
  • A
    $5 \mathrm{H}$
  • B
    $10 \mathrm{H}$
  • ✓
    $11 \mathrm{H}$
  • D
    $12 \mathrm{H}$
✓

Answer

Correct option: C.
$11 \mathrm{H}$
(c) $|e|=L \frac{d i}{d t} \Rightarrow 220=L \times \frac{10}{0.5} \Rightarrow L=11 H$

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