Question

The ratio of electric field vector $E$ and magnetic field vector $H$, i.e., $\left(\frac{E}{H}\right)$ has the dimensions of

• A. resistance
• B. inductance
• C. capacitance
• D. the product of inductance and capacitance

Answer 1

Answer: (A)

resistance

The impedance in free space is $Z_0=\frac{E}{H}=\sqrt{\frac{{\mu }_0}{{ϵ}_0}}=377\Omega$.
Thus, dimension of $\frac{E}{H}$ is resistance.