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A varying current in a coil change from ...

A varying current in a coil change from 10A to 0 in 0.5sec. If the average emf induced in the coil is 220V, the self inductance of the coil is :

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The mutual inductance of two long coaxial solenoids,
`M_(12)=M_(21)=(mu_(0)N_(1)N_(2)A_(1))/(l)=(mu_(0)N_(1)N_(2)(pir_(1)^(2)))/(l)[becauser_(1)ltltr_(2)]`
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CHHAYA PUBLICATION-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-CBSE SCANNER
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