Electrostatics ...

The distance between the plates of a parallel plate capacitor is d. A metal plate of thickness d / 2 is placed between the plates. The capacitance would then be

A capacitor is kept connected to the battery and a dielectric slab is inserted between the plates. During this process

The capacitance of an air capacitor is 15µF the separation between the parallel plates is 6 mm. A copper plate of 3 mm thickness is introduced symmetrically between the plates. The capacitance now becomes

An air capacitor is connected to a battery. The effect of filling the space between the plates with a dielectric is to increase

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?

The potentials of the two plates of capacitor are +10 V and –10 V. The charge on one of the plates is 40C. Thecapacitance of the capacitor is

The diameter of each plate of an air capacitor is 4 cm. To make the capacity of thisplate 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 andb 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

The expression for the capacity of the capacitor formed by compound dielectric placed between the plates of a parallel plate capacitor as shown in figure, will be (area of plate = A)

The intensity of electric field at a point between the plates of a charged capacitor