Two capacitances of capacity C₁ and C₂ are connected in series and potential difference V is applied across it. Then the potential difference across C₁ will be

A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch S is closed, which one of the following is true?

Capacity of a parallel plate condenser is 10µF when the distance between its plates is 8 cm. If the distance between the plates is reduced to 4cm, its capacity will be:

Three condensers each of capacitance 2F are put in series. The resultant capacitance is:

What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5 mm

Two capacitors of 10µ F and 20µ F are connected in series with a 30V battery. The charge on the capacitors will be, respectively

If potential difference of a condenser µ F)6( is changed from 10 V to 20 V then increase in energy is

The diameter of each plate of an air capacitor is 4 cm. To make the capacity of this plate capacitor equal to that of 20 cm diameter sphere, the distance between the plates will be

A spherical condenser has inner and outer spheres of radii a and b respectively. The space between the two is filled with air. The difference between the capacities of two condensers formed when outer sphere is earthed and when inner sphere is earthed will be

After charging a capacitor of capacitance 4µ F upto a potential 400 V, its plates are connected with a resistance of 1 kΩ . The heat produced in the resistance will be