Question

What is the electric field amplitude of an electromagnetic wave whose magnetic field amplitude is 5.4 mT ?

Answer 1

Given:

Magnetic field amplitude = 5.4 mT

Let's find the electric field amplitude of the electromagnetic wave.

To find the electric field amplitude, apply the formula:

`E=C*B`

Where:

C is the speed of light = 3 x 10⁸ m/s

B is the magnetic field amplitude = 5.4 mT = 5.4 x 10⁻³ T

E is the electric field intensity.

Plug in the values and solve for E:

`\begin{gathered} E=3*10^8*5.4*10^(-3) \\ \\ E=1.62*10^6\text{ V/m} \end{gathered}`

Therefore, the electric field amplitude is 1.62 x 10⁶ V/m.

ANSWER:

1.62 x 10⁶ V/m.