Capacitance from charge and voltage

The electrical capacitance of an object is a physical quantity that describes the capability of the object to store energy in the form of an electric charge. It is directly proportional to the charge accumulated in the object and inversely proportional to the voltage across it.

Notes:

1. This equation can be seen as the definition of self-capacitance.

2. This law can be used to as well calculate the mutual capacitance of two conductive bodies whose net charge is zero, e.g. a parallel-plate capacitor, in which case \(q\) is the magnitude of the electric charge of the plates and \(V\) is the voltage between the plates. In other cases, the capacitance matrix must be used.

Links:

1. Wikipedia.

capacitance

capacitance of the object.

Symbol:

C

Latex:

\(C\)

Dimension:

capacitance

charge

charge accumulated in the object.

Symbol:

q

Latex:

\(q\)

Dimension:

charge

voltage

voltage across the object.

Symbol:

V

Latex:

\(V\)

Dimension:

voltage

definition

C = q / V

Latex:

\[C = \frac{q}{V}\]