# Finding Angular Frequency of Electromagnetic Wave

• sarahaha288

#### sarahaha288

I am doing some practice and need help with a problem,
I am trying to find the angular frequency of an electromagnetic wave given a general wave equation in standard form
Esin(kx-wt)
I am given the variable k,, and i need to find the angular frequency w. I am not sure how to do this without finding the period, which i can't find without angular velocity.

DO you know the relation of wave number (or wave vector) k with speed of light and $$2\pi$$? From that you can find wave length or period.
For electromagnetic wave you know it travel with light's speed.
So for a given k you can find its angular frequency.
good luck

## What is the formula for finding the angular frequency of an electromagnetic wave?

The formula for finding the angular frequency of an electromagnetic wave is ω = 2πf, where ω is the angular frequency and f is the frequency of the wave.

## How does the angular frequency of an electromagnetic wave relate to its energy?

The angular frequency of an electromagnetic wave is directly proportional to its energy. This means that as the angular frequency increases, the energy of the wave also increases.

## What are the units for measuring angular frequency of an electromagnetic wave?

The units for measuring angular frequency are radians per second (rad/s). This unit is commonly used in physics to measure rotational speed or angular velocity.

## How is the angular frequency of an electromagnetic wave related to its wavelength?

The angular frequency of an electromagnetic wave is inversely proportional to its wavelength. This means that as the angular frequency increases, the wavelength decreases.

## What is the difference between angular frequency and frequency of an electromagnetic wave?

The angular frequency of an electromagnetic wave represents the rate of change of the wave's phase over time, while the frequency represents the number of complete oscillations of the wave per unit time. In other words, angular frequency is a measure of how fast the wave is rotating, while frequency is a measure of how many rotations occur in a given time period.