The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT . The peak value of electric field strength is: - Physics MCQ JEE Main 2026 | ExamTest.live

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

Solution & Step-by-step Explanation

For an electromagnetic wave in vacuum, the relation between the peak electric field (E_{0}) and peak magnetic field (B_{0}) is: E_{0} = c B_{0} E_{0} = (3 \times 1 0^{8} m/s) \times (20 \times 1 0^{- 9} T) E_{0} = 3 \times 20 \times 1 0^{- 1} = 60 \times 0.1 = 6 V/m .

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

6 V/m

9 V/m

12 V/m

3 V/m

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