physics For the given circuit and the current and loop directions shown, select

Question

physics

For the given circuit and the current and loop directions shown, select the correct set of equations. I1 + I2 = I3 12V = 120Ohm I2 + 80Ohm I3 18V = 60Ohm I1 - 80OhmI3 I1 = I2 + I3 12V = 120Ohm I2 + 80Ohm I3 18V = -60Ohm I1 + 80OhmI3 I1 = I2 + I3 12V = -120Ohm I2 + 80Ohm I3 18V = 60Ohm I1 + 80OhmI3 I1 + I2 = I3 12V = -120Ohm I2 + 80Ohm I3 18V = -60Ohm I1 - 80OhmI3 I1 = I2 = I3 12V = 120Ohm I2 - 80Ohm I3 18V = -60Ohm I1 + 80OhmI3 Initially, for the circuit shown above, the switch S is open and the capacitor charge is 80 mu C. The switch S is closed at time t = 0. The capacitor charge when the time t is equal to 40.0 s is closest to: 80 mu C 73 mu C 66 mu C 60 mu C 53 mu C

Explanation / Answer

12)c

13)e

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