Two capacitors `C_1` and `C_2` are charged to 120V and 200V respectively. It is found that connecting them together the potential on each one can be made zero. Then

Two capacitors C_(1) and C_(2) are charged to 120 V and 200 V respectively. It is found that by connecting them together the potential on each one can be made zero. Then

Two capacitors of capacities C_1 and C_2 are charged to 120 V and 200 V respectively. It is found that on connecting them together, the potential on each of them can be made zero. Then,

Two capacitors having capacitances C_(1) and C_(2) are charged with 120 V and 200 V batteries respectively. When they are connected in parallel now, it is found that the potential on each one of them is zero. Then,

Two capacitors having capacitances C_(1) and C_(2) are charged with 120 V and 200 V batteries respectively. When they are connected in parallel now, it is found that the potential on each one of them is zero. Then,

Two capacitors having capacitances C_(1) and C_(2) are charged with 120 V and 200 V batteries respectively. When they are connected in parallel now, it is found that the potential on each one of them is zero. Then,

Two capacitors of 10 PF and 20 PF are connected to 200 V and 100 V sources respectively. If they are connected by the wire, what is the common potential of the capacitors ?