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Physics
The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is
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Q. The magnetic field in a travelling electromagnetic wave has a peak value of $20\, nT$. The peak value of electric field strength is
JEE Main
JEE Main 2013
Electromagnetic Waves
A
$3V/m$
16%
B
$6 V/m$
52%
C
$9 V/m$
20%
D
$12 V/m$
12%
Solution:
Peak value of electric field
$E_0 = B_0c = 20 \times 10^{-9} \times 3 \times 10^8 = 6 V/m $