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BITSAT2009PhysicsElectromagnetic WavesActual

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

Options

  1. A3 ~V / m
  2. B6 ~V / m
  3. C9 ~V / m
  4. D12 ~V / m

Correct answer

B. 6 ~V / m

Step-by-step solution

E ₀= B ₀ C | E ₀ |= | B ₀ | | C |=20 10⁻⁹ 3 10⁸=6 ~V / m

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