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magnetic flux of 20 mu Wb is linked with...

magnetic flux of 20 `mu` Wb is linked with a coil when current of 5 mA is flown through it. What is the self induction of the coil?

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Here, `phi = 20 mu Wb = 20 xx 10^(-6) Wb`
`I = 5 mA = 5 xx 10^(-3) A, L = ?`
From `phi = LI, L = (phi)/(I) = (20 xx 10^(-6))/(5 xx 10^(-3))`
`= 4 xx 10^(-3) H = 4 mH`
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