Define electric capacitance and write its S.I.unit.



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The ratio of charge given to a conductor and potential raised due to this charge is called electric capacitance of the conductor.
From equation : 
Thus , the electric capacitance of a conductor is a constant. Its  value depends upon the nature and area of the conductor and on the environment around the conductor and also on the other conductors placed near the conductor.
Again from , if =1 volt, then
i.e. the electrical capacitance of a conductor of a conductor is equal to charge of conductor when the applied potential on a conductor take as unity.
Unit and Dimensions:

Unit of capacitance CV Farad (F)
1CV 1F
If q = 1C, V = 1 volt, then C = 1F
i.e., 'If on giving a charge of 1 C to a conductor its potential is increased by 1 volt, then the capacitance of the conductor will be 1F'.
Farad is a big unit of capacitance. In practice other small units e.g, F and or pF are used.
and F = 1 pF = F
Dimensional formula:
Dimensional formula of C
Graph : If a graph is plotted between and , then the straight line is obtained.
The gradient of the graphical line
i.e., the gradient of the graph provides the capacitance of the conductor.

Solve any question of Electrostatic Potential and Capacitance with:-

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