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  4. Magnetic flux of 10 μ Wb is linked with a coil, when a current of 2 mA flows through it. What is the self inductance of the coil?

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Q. Magnetic flux of $10 \mu Wb $ is linked with a coil, when a
current of 2 mA flows through it. What is the self
inductance of the coil?

J & K CETJ & K CET 2011

Solution:

Magnetic flux $\phi =Li$
$\, \, \, \, \, L= \frac {\phi}{i}= \frac {10 \times 10^{-6}}{2 \times 10^{-3}}=5 \times 10^{-3}=5 mH $