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Current in a circuit falls from 5.0 A to...

Current in a circuit falls from 5.0 A to 0.0 A in 0.1s. If an average emf of 200 V is induced give an estimate of the self-inductance of the circuit.

Text Solution

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`varepsilon=|L.(dI)/(dt)|," "varepsilon=200V,dI=(5-0)A,dt=0.1sec`
`L=(epsilon)/(((dI)/(dt)))=(200xx0.1)/(5)=4H`
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