Question

Physics 2

The parallel plates of a capacitor have an area of ​​2.00 m2 and a separation between the plates of 5.00 mm. A potential difference of 10 kV is applied. Pull (a) the capacity (b) the energy stored in the capacitor.

Answer 1

The capacitance is given by

where is the permittivity of free space and is equal to , is the separation of the plates, and is the overlapping area of the plates.

Therefore, the capacitance is

or

The energy stored in a capacitor is given by

where is the potential difference between the plates.

Substituting our values, we get