Discussion Forum



1)

The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is 


A) 3 V/m

B) 6 V/m

C) 9 V/m

D) 12 V/m

Answer:

Option B

Explanation:

 Peak value of electric field

   E0=B0c=20×10−9×3×108

   =6 V/m