What is a capacitor ? Define its capacitance. Explain the units of capacitance.

Unit of capacitance is

(a) Define the SI unit of capacitance.

Capacitor and its Capacitance

Define capacitive reactance

In parallel arrangement of capacitor, i. the p.d across individual capacitor is same. ii. The charge is shared by the capacitor in the ratio of the capacitance. iii. The resultant capacitance is equal to sum of the capacitance of capacitors used.

A sheet of aluminium foil of negligible thickness is placed between the plates of a capacitor of capacitance C as shown in the figure then capacitance of capacitor becomes

Assertion: Id distance between the parallel plates of a capacitor is halved, then its capacitance is doubled. Reason: The capacitance depends on the introduced dielectric.

Define capacitance of a consutor.