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Question

The maximum electric field in a plane electromagnetic wave is900NC-1. The wave is going inx -direction and the electric field is in the y-direction. The maximum magnetic field in the wave is_____________T.


A

3x10-8

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B

3x10-6

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C

27x10-6

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D

27x1010

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Solution

The correct option is B

3x10-6


Step 1. Given data:

The maximum electric field in a plane electromagnetic waveE0=900NC-1

The direction of the wave is =x

The direction of the electric field =y

Step 2. Formula used:

The maximum magnetic field can be expressed as,

B0=E0c (WhereB0= Maximum magnetic field, c=Speed of light in vacuum)

Step 3. Calculating the maximum magnetic field:

The maximum value of the magnetic field,

B0=E0c=9003×108T=3×10-6T

Thus, the maximum magnetic field is 3x10-6T.

Hence, option B is the correct answer.


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