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Physics-

General

Easy

Question

The amplitude of the magnetic field part of a harmonic Electromagnetic Wave in vacuum is B₀=510 nT. What is the amplitude of the electric field part of the wave?

140 NC^-1
153 NC^-1
163 NC^-1
133 NC^-1

The correct answer is: 153 NC^-1

For an EM wave, $fraction numerator E subscript 0 end subscript over denominator B subscript 0 end subscript end fraction equals c blank o r E subscript 0 end subscript equals c B subscript 0 end subscript$
$equals blank 3 blank cross times blank 10 to the power of 8 end exponent blank cross times blank 510 blank cross times 10 to the power of negative 9 end exponent N C to the power of negative 1 end exponent$
$equals blank 153 blank N C to the power of negative 1 end exponent$

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