Modern Physics Ques 282
- 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$
(2013 Main)
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Answer:
Correct Answer: 282.(b)
Solution:
Formula:
Relation Between The Magnetic Field Vector And The Electric Field Vector:
- Peak value of electric field
$ E _0=B _0 c=20 \times 10^{-9} \times 3 \times 10^{8}=6 $ $V / m $
BETA
