# Problem: A sinusoidal electromagnetic wave is propagating in a vacuum in the +z-direction.Part AIf at a particular instant and at a certain point in space the electric field is in the +x-direction and has a magnitude of 3.40V/m, what is the magnitude of the magnetic field of the wave at this same point in space and instant in time?Part BWhat is the direction of the magnetic field?

###### FREE Expert Solution

Part A

Electric field, E = cB

B = E/c

###### Problem Details

A sinusoidal electromagnetic wave is propagating in a vacuum in the +z-direction.

Part A

If at a particular instant and at a certain point in space the electric field is in the +x-direction and has a magnitude of 3.40V/m, what is the magnitude of the magnetic field of the wave at this same point in space and instant in time?

Part B

What is the direction of the magnetic field?

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