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Find the values of i1 and i2 i) ...

Find the values of `i_1` and `i_2`

i) immediately after the switch S is closed.

Text Solution

Verified by Experts

Just after closing the switch the inductor will be treated as open circuit. So the circuit would be like as shown in figure.

`i_1 =i_2 = 100/30 = 10/3 A`
After a long time of closing the switch, the inductor is treated as short circuit. So the circuit would be like as shown in figure.

Solving above circuit will get `i_1 = 50/11 A, i_2 = 30/11 A`
and current through inductor is `20/11A`
Just after reopening the switch `i_1` = 0 and as inductor tries to oposse any variation in flux reopening the switch would be same.
so , `i_1 = 20/11 A`
After a long time of reopening the switch the current is zero.
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