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A Plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time E¯=6.3 jˆ . The magnetic field B at this point is

a
4.2 × 10-8 k^ T
b
2.1 × 10-8 k^ T
c
18.9 × 108 k^ T
d
2.1 × 108 k^ T

detailed solution

Correct option is B

C=EB ; B=EC=6.33 x 108=2.1 x 10-8B¯=2.1 x 10-8  k^ T

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