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E is the electric field vector, and B is the magnetic field vector of the EM wave. For electromagnetic waves E and B are always perpendicular to each other and perpendicular to the direction of propagation. The direction of propagation is the direction of E × B.

## What is perpendicular to the direction of propagation?

The direction a wave propagates is perpendicular to the direction it **oscillates for transverse waves**. A wave does not move mass in the direction of propagation; it transfers energy.

## How do you determine the direction of propagation of an electric field?

To find the direction of propagation of an E&M wave, **point the fingers of the right hand in the direction of the electric field**, curl them toward the direction of the magnetic field, and your thumb will point in the direction of propagation.

## Why is electric field perpendicular to magnetic field?

One curl equation states that **if the electric field tends to rotate, it will induce a magnetic field at the center of rotation** and in a direction perpendicular to the rotation. The other curl equations states the opposite, that an electric field will be induced at the center of rotation of a magnetic field.

## In which wave the vibrations are perpendicular to the direction of propagation?

In **transverse waves**, particles of the medium vibrate to and from in a direction perpendicular to the direction of energy transport. 4. A transverse wave is traveling through a medium. See diagram below.

## In which direction is the electromagnetic wave traveling?

For electromagnetic waves E and B are always perpendicular to each other and perpendicular to the direction of propagation. The direction of propagation is the **direction of E x B**. If, for a wave traveling in the x-direction E = Ej, then B = Bk and j x k = i. Electromagnetic waves are transverse waves.

## In which direction does an electromagnetic waves propagate?

Electromagnetic waves are transverse waves. That means the electric and magnetic fields change (oscillate) in a plane that is **perpendicular to the direction** of propagation of the wave. Also note that electric and magnetic fields in an EM wave are also perpendicular to each other.

## What is the direction of the magnetic field if it is perpendicular to the electric field?

they are produced only by moving charges while electric fields are produced by both moving charges and stationary charges. moving charge is perpendicular to the **direction** of motion. The direction of the force due to a magnetic field is perpendicular to the direction of motion.

## Is electric field always perpendicular to equipotential surface?

Equipotential surfaces have equal potentials everywhere on them. … These equipotential surfaces are always **perpendicular to** the electric field direction, at every point.

## Can electric field lines cross?

**Electric field lines cannot cross**. … This is because they are, by definition, a line of constant potential. The equipotential at a given point in space can only have a single value. If lines for two different values of the potential were to cross, then they would no longer represent equipotential lines.