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Physics
The instantaneous magnitudes of the electric field (E) and the magnetic field (B) vectors in an electromagnetic wave propagations in vacuum are related as
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Q. The instantaneous magnitudes of the electric field $(E)$ and the magnetic field $(B)$ vectors in an electromagnetic wave propagations in vacuum are related as
KCET
KCET 2022
A
$E=\frac{B}{C}$
B
$E=C B$
C
$E=\frac{B}{c^{2}}$
D
$E=c^{2} B$
Solution:
At every instant the ratio of the magnitude of the electric field to that of magnetic field in an electromagnetic wave equal to the speed of light.