Question

What does \(\varepsilon_0\) represent in the electric-field formula for a charged conductor surface?

Options

• Surface charge density.

• Permittivity of free space.

• The outward normal unit vector.

• Electric potential.

Answer 1

In the expression \(\vec{E}=\frac{\sigma}{\varepsilon_0}\hat{n}\), \(\varepsilon_0\) denotes the permittivity of free space. The symbol \(\sigma\) denotes surface charge density.