Question

Define capacitance of a capacitor and write its si unit

Answer 1

the ability of capacitor to store charge is called capacitance 
c=q/v
unit is farad

Answer 2

Capacitance is the ability of system to store electric charges in it, the system is so called as Capacitor.

The S.I. Unit of Capacitance is F (Farad).

-WonderGirl