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Different Forms of Equations

The magnetic ...

Question

The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is

A

6 V/m

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B

9 V/m

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C

12 V/m

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D

3 V/m

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Solution

The correct option is A
6 V/m

We know that, $E_{0} = c B_{0}$

$= 3 \times 10^{8} \times 20 \times 10^{- 9} = 6 V / m$

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