Question

In an electromagnetic wave at any instant the electric field was found to oscillate with an amplitude of 18v/m. The magnitude of oscillating magnetic field will be

Answer 1

Given:

Amplitude of the wave - 18v/m

To Find:

Magnitude of the oscillating magnetic field.

Solution:

E0 = 18 V/m

The relationship between Eo and Bo is B0 = E0/C

- where

E0 is electric field amplitude, B0 is magnetic field amplitude and C is the speed of light in vacuum. Thus according to the E0 equation -

Oscillating magnetic field will be -

= 18/ 3 × 10⁸

= 6 × 10⁻⁸ T

Answer: the magnitude of the oscillating magnetic field will be 6 × 10⁻⁸ T