Question

If \( E \) and \( H \) represent the intensity of electric field and magnetizing field respectively, then the unit of \( \frac{E}{H} \) will be:

• A. ohm
• B. mho
• C. joule
• D. newton

Hint:

The ratio of electric field intensity \( E \) to magnetic field intensity \( H \) gives the unit of resistance, which is ohm.

Answer 1

The Correct Option is A

Step 1: The intensity of the electric field \( E \) is measured in volts per meter (V/m), and the intensity of the magnetic field \( H \) is measured in amperes per meter (A/m). 
Step 2: The ratio \( \frac{E}{H} \) represents the ratio of voltage per unit length to current per unit length, which has the units of resistance. 
Step 3: The unit of resistance is ohms, so the unit of \( \frac{E}{H} \) is ohm.