Question

A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2300 W/m2 . Part A What is the amplitude of the oscillating electric field

Answer 1

The amplitude of the oscillating electric field is 1316.96 N/C

Step-by-step explanation:

Given;

frequency of the wave, f = 2.4 Hz

intensity of the wave, I = 2300 W/m²

Amplitude of oscillating magnetic field is given by;

`B_o = \sqrt{(2\mu_o I)/(c) }`

where;

μ₀ is permeability of free space = 4π x 10⁻⁷ m/A

I is intensity of wave

c is speed of light = 3 x 10⁸ m/s

`B_o = \sqrt{(2*4\pi *10^(-7)*2300)/(3*10^8) } \\\\B_o = 4.3899 *10^(-6) \ T`

The amplitude of the oscillating electric field is given by;

E₀ = cB₀

E₀ = 3 x 10⁸ x 4.3899 x 10⁻⁶

E₀ = 1316.96 N/C

Therefore, the amplitude of the oscillating electric field is 1316.96 N/C