The difference between the radill of the two spheres of a spherical capacitor is increased. Will the capacitance increase or decrease ?

If the difference between the radii of the two spheres of a spherical capacitor is increased, state whether capacitance will increase or decrease?

The outer sphere of a spherical air capacitor is earthed.For increasing its capacitance

The capacitance of a capacitor decreases, if

If potential difference across resistor is increased, will the current increase or decrease?

Write down the expression for the capacitance of a spherical capacitor?

Write down the expression for the capacitance of a spherical capacitor.

If the potential difference between the plates of a capacitor is increased by 20%, the energy stored in the capacitor increase by exactly