Question

please solve as fast as possible

Q4: The switch in the has been open a long time before closing at t=0. Find ir(t) for t> 0. 2.5 k92 15V 262.5H 2.5AF 9 ma

Answer 1

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Given circuit 2.5kr qt=0 67,543 2.5uf 15V gma if before closing Ciresit is open for long time befor closing inductor behave as short circuit and eapautor Short Urcuit and eapautor is open circuted 1.600)=Licot) = 15 som Ema Velo) Velof} = 0 volt. so 2 sk

after tzo circuit is 2.5kr 62:54 c=2sup 9 ma 15V 2.5 i, Lot) = 6mA at steady state il loo)= qma+ 15 ma ISMA Iltime constant for Parallel RLC) = 2Rc - so T- 2X 2 SK X 2.54 Ta o see iect): icm) hilo-icojer ict) = 15 +6-15) e Amp 15 +615) e thyeo ilt ) = 15-96-80th