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Two coils have mutual inductance of 1.5 ...

Two coils have mutual inductance of 1.5 henry. If current in primary circuit is raised to 5 ampere in one millisecond after closing the circuit, what is the e.m.f. Induced in the secondary ?

Text Solution

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Here, `M = 1.5`, henry, `dI = 5` apmere
`dt = 1` milli sec. ` = 10^(-3) sec., e = ?`
As `e = M (dI)/(dt) :.e = 1.5 xx (5)/(10^(-3)) = 7.5 xx 10^(-3) V`
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