Q89 / 90 · JEE Main 2013 (07 Apr) · Physics

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

A
$9 V m^{- 1}$
B
$12 V m^{- 1}$
C
$3 V m^{- 1}$
Correct answer
D
$6 V m^{- 1}$

Solution

E = B c = 20 \times 10^{- 9} \times 3 \times 10^{8}

= 6 V/m

Hence, the correct answer is option: 'D'.

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