Home
Class 12
PHYSICS
The ratio of amplitude of magnetic field...

The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum is equal to

A

Unity

B

Speed of light in vacuum

C

Reciprocal of the speed of light in vacuum

D

The ratio of magnetic permeability to electrical susceptibility in a vacuum.

Text Solution

Verified by Experts

The correct Answer is:
B
A magnetic field is a vector quantity that describes the magnetic influence or an electric charge of another moving charge. A charge that is a magnetic field that is perpendicular to its own velocity and magnetic field. Electric fields surround an electric charge and exert force on the charge of electric fields attracting or repelling it. Electric field and magnetic field both are interrelated to each other and both are components of electromagnetic waves.
We know that,
`implies c=(E_0)/(B_0)`
`implies (B_0)/(E_0)=1/c`
Therefore, the ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave in a vacuum is equal to the reciprocal of speed of light.
Promotional Banner

Similar Questions

Explore conceptually related problems

The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacumm is equal to

The electric and magnetic field of an electromagnetic wave is

The ratio of amplitude B_(0) and E_(0) of the magnetic electric fields associated with an electromagnetic wave is

How does a charge q oscillating at certain frequency produce electromagnetic waves ? Sketch a schematic diagram depicting electric and magnetic fields for an electromagnetic wave propagating along the Z-direction.

The amplitude of electric field in an electromagnetic wave is 60 Vm^(-1) . Then the amplitude of magnetic field is

Write the relation for the speed of electromagnetic wave in terms of the amplitudes of electric and magnetic fields.

The amplitudes of electric and magnetic fields are related to each other as

The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B_0=510 nT . What is the amplitude of the electric field part of the wave?

The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B_0=510 nT . What is the amplitude of the electric field part of the wave?