Q.

In an electromagnetic wave, the electric and magnetising fields are 100 V m-1 and 0.265 A m-1. The maximum energy flow is

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a

26.5 W/m2

b

36.5 W/m2

c

46.7 W/m2

d

765 W/m2

answer is A.

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Detailed Solution

Here E0=100 V/m,B0=0.265 A/m.∴ Maximum rate of energy flow S =E0×B0= 100×.265=26.5Wm2
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In an electromagnetic wave, the electric and magnetising fields are 100 V m-1 and 0.265 A m-1. The maximum energy flow is