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If the magnetic field in a sinusoidal electromagnetic wave which propagates in vacuum is given by
Bmax COs(ky+ wt)î
Emax
what is the ratio
in units of V m
2
for Bmax
2 x 10
10
T and w = 12 x 1010 rad/s?
(Emax and A are the amplitude of the electric field and wavelength respectively. Take T =
=3.14.)
7.64
О 3.82
O 11.46
1.91
O 19.11

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