Grade Select GradeElectrostatics
Two capacitors A and B with capacities 3 mF and 2 mF are charged to a potential
difference of 100 V and 180 V respectively. The plates of the capacitors are
connected as shown in the figure with one wire from each capacitor free. The
upper plate of A is positive and that of B is negative. An uncharged 2 mF
capacitor C with lead wires falls on the free ends to complete the circuit.
Calculate
(i) the final charge on the three capacitors, and
(ii) the amount of electrostatic energy stored in the system before and after
the completion of the circuit
Two capacitors A and B with capacities 3 mF and 2 mF are charged to a potential
difference of 100 V and 180 V respectively. The plates of the capacitors are
connected as shown in the figure with one wire from each capacitor free. The
upper plate of A is positive and that of B is negative. An uncharged 2 mF
capacitor C with lead wires falls on the free ends to complete the circuit.
Calculate
(i) the final charge on the three capacitors, and
(ii) the amount of electrostatic energy stored in the system before and after
the completion of the circuit
difference of 100 V and 180 V respectively. The plates of the capacitors are
connected as shown in the figure with one wire from each capacitor free. The
upper plate of A is positive and that of B is negative. An uncharged 2 mF
capacitor C with lead wires falls on the free ends to complete the circuit.
Calculate
(i) the final charge on the three capacitors, and
(ii) the amount of electrostatic energy stored in the system before and after
the completion of the circuit
