Home
Class 12
PHYSICS
How is the speed of em-waves in vacuum d...

How is the speed of em-waves in vacuum determined by the electric and magnetic fields ?

Text Solution

Verified by Experts

Speed of em waves is determined by the ratio of the peak values of electric and magnetic field vectors.
[Alternaitvely,Give full creidt, if student writes directly `c=(E_(@))/(B_(@))`]
Promotional Banner

Topper's Solved these Questions

  • CBSE BOARD EXAMNATION PAPER (2017 )

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION B|4 Videos

  • CBSE BOARD EXAMNATION PAPER (2017 )

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION C|18 Videos

  • 2018 QUESTION PAPER (DELHI )

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION E|15 Videos

  • CBSE EXAMINATION PAPER - 2016

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION - E|17 Videos

Similar Questions

Explore conceptually related problems

What is the speed of e.m. waves in vacuum?

In a region of space with mutually perpendicular electric and magnetic fields, a charged particle moves without deflection, with a speed very much smaller tan the speed of light in vacuum (c). The energy densities due to the electric and magnetic fields are u_(E) and u_(B) respectively.

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

The speed of electromagnetic wave in vacuum

A : In an EM wave the magnitude of the electric field vector is more than the magnitude of the magnetic field vector. R : Energy of the EM wave is shared equally between the electric and magnetic fields.

What is the intensity of an electromagnetic wave in terms of electric and magnetic field?

When light propagates in vacuum there is an electric field and a magnetic field. These fields

The speed of electmagnetic waves in vacuum is equal to