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An inductor is connected to a battery through a switch. Explain why the emf induced in the conductor is much larger when the switch is opened as compared to the emf induced in when the switch is closed.

An inductor is connected to a battery through a switch. Explain why the emf induced in the conductor is much larger when the switch is opened as compared to the emf induced in when the switch is closed.

Grade:12

1 Answers

AJIT AskiitiansExpert-IITD
68 Points
11 years ago

Dear nikhil ,

when you close the switch hte current takes some time to build in the circuit and rate is say R.  due o this rate of growth the flux increases and emf is induced. when you open the switch , there is no path for current to flow , so it suddenly drops to zero unlike in closing case.So , rate of decrease of current or flux  is much more in openning than in closing. so , EMF induced is more.

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