A capacitor of capacitance `10 m F` is charged up a potential difference of `2V` and then the cell is removed. Now it is connected to a cell of `emf 4V` and is charged fully. In both cases the polarities of the two cells are in the same directions. Total heat produced in the second charging process is :

A capacitor of capacitance C is charged to a potential difference V from a cell and then disconnected from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now

A capacitor of capacitance C is charged to a potential difference V from a cell and then disconnected from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now

A capacitor of capacitance C is initially charged to a potential difference of V volt. Now it is connected to a battery of 2V with oppoiste polarity. The ratio of heat generated to the final enegry stored in the capacitor will be

A capacitor of capacitance C is initially charged to a potential difference of V volt. Now it is connected to a battery of 2V with oppoiste polarity. The ratio of heat generated to the final enegry stored in the capacitor will be

Two capacitors of capacitance 10 muF and 20 muF are charged to potential 20 V and 10 V respectively. If they are connected to share charges, then loss of energy is

A capacitor of capacitance C is charged to a potential difference V from a cell and then disconncted from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now

A capacitor of capacitance C is charged to a potential difference V from a cell and then disconncted from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now

A capacitor of capacitance C is charged to a potential difference V from a cell and then disconnected from it. A charge +Q is now given to its positive plate. The potential difference across the capacitor is now.

A capacitor of capacitance C is initially charged to a potential difference of V volt. Now it is connected to a battery of 2V with opposite polarity. The ratio of heat generated to the final energy stored in the capacitor will be n/4 where .n. is

A capacitor of capacitance 2muF is charged to a potential difference of 5V . Now, the charging battery is disconected and the capacitor is connected in parallel to a resistor of 5Omega and another unknown resistor of resistance R as shown in figure. If the total heat produced in 5Omega resistance is 10muJ then the unknown resistance R is equal to