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The magnetic field in a plane electromag...

The magnetic field in a plane electromagnetic wave is given by, `B_(y)=(2 xx 10^(-7) T) sin (0.5 xx 10^(3) x+1.5 xx 10^(-11)t)`. The electric field Ez is.

A

`2 sin (0.5+10^3 x+1.5 xx 10^(11)t)`

B

`2 xx 10^(-7) sin (0.5 xx 10^(3) x+1.5 xx 10^(11)t)`

C

`(60N//C) sin (0.5 xx 10^(3) x+1.5 xx 10^(11)t)`

D

`3 xx 10^(8) sin (0.5 xx 10^(3) x+1.5 xx 10^(11)t)`

Text Solution

Verified by Experts

The correct Answer is:
C
`B_(0)=2 xx 10^(-7)T, E_(0)=B_(0)C=60N//C`
The electric field is perpendicular to both, the magneic field and the travel of wave. Thus, `E_(z)=(60N//C) sin (0.5 xx 10^3 x+1.5 xx 10^(11)t)`
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