Question: Each capacitor in the circuit of Fig. is 4mF. When the switch S is closed how much charge will flow ...

Question

Each capacitor in the circuit of Fig. is 4mF. When the switch S is closed how much charge will flow through AB?

Answer 1

Switch open Q = $\frac { 8 \times 4 } { 12 }$ × 40 = $\frac { 320 } { 3 }$ mC

Switch closed Q = 8 × 40 = 320 mC

Charge flown through AB= 320– $\frac { 320 } { 3 }$ = $\frac { 640 } { 3 }$ mC