Question

What is the SI unit of permittivity of free space (ε₀)?

Options

• C² N⁻¹ m⁻²

• C N⁻¹ m⁻¹

• m² C⁻¹ N⁻¹

• N C⁻¹

Answer 1

The permittivity of free space (ε₀) has the SI unit C² N⁻¹ m⁻². This constant equals 8.85 × 10⁻¹² in these units and appears in the denominator of Gauss's Law equations to relate electric flux to enclosed charge.