PF EMI BYU 27

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A circuit consists of two inductances L1 and L2, a resistance R, a two-way switch, a battery of electromotive force e and internal resistance r. The switch was in position 2 for long time and at the instant t =0, it is thrown to position 3.
(a) Find current through the switch as a function of time t after the switching.
(b) Find total head dissipated in resistance R after the switching.


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