Modern Physics 7 Question 34

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

(a) 3V/m

(b) 6V/m

(c) 9V/m

(d) 12V/m

(2013 Main)

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Solution:

  1. Peak value of electric field

E0=B0c=20×109×3×108=6V/m



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