8.65 90 V 30 ΚΩ 30 ΚΩ img борг Fig. 8-24 10 μF Repeat Prob. 8.64 for (0+) = 20 V and for the 60-k2 resistor replaced by

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8.65 90 V 30 ΚΩ 30 ΚΩ img борг Fig. 8-24 10 μF Repeat Prob. 8.64 for (0+) = 20 V and for the 60-k2 resistor replaced by a 70-k2 resistor.
8.64 The switch is closed at t=0s in the circuit shown in Fig. 8-24. Find vand i for t> 0 s. The capacitor is initially uncharged.