Courses
Courses for Kids
Free study material
Offline Centres
More
Store

# The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength isA: 6V/mB: 9V/mC: 12V/mD: 3V/m

Last updated date: 18th Jun 2024
Total views: 402.9k
Views today: 9.02k
Verified
402.9k+ views
Hint: The peak value of electric field strength is the product of peak value of magnetic field and velocity of light. Thus by substituting the value of magnetic field and velocity of light we get the value of peak electric field strength. So in an EM wave, the magnitude of electric field is proportional to the magnitude of magnetic field.
Formula used:
${{E}_{0}}=c{{B}_{0}}$
where, ${{E}_{0}}$ is the electric field
${{B}_{0}}$ is the magnetic field
c is the velocity of light.

By applying the equation we get,
${{E}_{0}}=c{{B}_{0}}$
where, ${{E}_{0}}$ is the electric field
${{B}_{0}}$ is the magnetic field
c is the velocity of light.
Substituting the values in the above equation,
${{E}_{0}}=3\times {{10}^{8}}\times 20\times {{10}^{-9}}=6V/m$

So, the correct answer is “Option A”.