The switch is at terminal c for t < for t < 0s. At t =...

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The switch is at terminal c for t < for t < 0s. At t = 0s, it is flipped to terminal a and assume this flipping take negligible time. a) Find the voltage across the capacitor (Vc(t)) for t ≤0s & t≥ 0s. Hints: You have already obtained the Thevenin's equivalent circuit to the left side of terminals a & c When considering the case for t2 0s, pls directly quote that result to simplify your circuit. b) Hence, obtain the current /c(t) for t<0s & t > 0s. c) Hence, obtain the voltage VR (t) for t<0s & t > 0s. Hints: i) The voltage across the 35ohms resistor still follow V=IR such that it will change with Ic(t). ii) Voltage across capacitor must be continuous, but voltages across resistors can be discontinuous iii) The branch of capacitor + 35ohms resistor is parallel to the branch of 5V + (1+d8) ohms resistor after t >0s, such that these two branches must have the same voltage at any t>Os though this voltage can be changing with time. i.e. KVL still holds d8=1 5V + VR- www (1 + dg) 3A (1 200 ww 470 µF 350 W 15+ 700 ww 410 ww 3V The switch is at terminal c for t < for t < 0s. At t = 0s, it is flipped to terminal a and assume this flipping take negligible time. a) Find the voltage across the capacitor (Vc(t)) for t ≤0s & t≥ 0s. Hints: You have already obtained the Thevenin's equivalent circuit to the left side of terminals a & c When considering the case for t2 0s, pls directly quote that result to simplify your circuit. b) Hence, obtain the current /c(t) for t<0s & t > 0s. c) Hence, obtain the voltage VR (t) for t<0s & t > 0s. Hints: i) The voltage across the 35ohms resistor still follow V=IR such that it will change with Ic(t). ii) Voltage across capacitor must be continuous, but voltages across resistors can be discontinuous iii) The branch of capacitor + 35ohms resistor is parallel to the branch of 5V + (1+d8) ohms resistor after t >0s, such that these two branches must have the same voltage at any t>Os though this voltage can be changing with time. i.e. KVL still holds d8=1 5V + VR- www (1 + dg) 3A (1 200 ww 470 µF 350 W 15+ 700 ww 410 ww 3V

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