Question

What is the energy density of the electric field for a parallel-plate capacitor?

Options

• \[u=\frac{1}{2}\varepsilon_0E^2\]

• \[u=\varepsilon_0E\]

• \[u=\frac{1}{2}\varepsilon_0E\]

• \[u=\frac{E^2}{2\varepsilon_0}\]

Answer 1

For a parallel-plate capacitor, the energy density of the electric field is \(u=\frac{1}{2}\varepsilon_0E^2\). Here, \(\varepsilon_0\) is the permittivity of free space and \(E\) is electric field intensity.