The electric field in an electromagnetic wave (in vacuum) is described by E = Emax sin(k x − ω t), where Emax?
where Emax = 75 N/C and k = 2.8 × 10^8 m^−1.The speed of light is 2.99792 × 10^ 8 m/s. Find the amplitude of the corresponding magnetic wave. Answer in units of T. Help Please?
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The magnetic component of a plane EM wave in space has the same form as electric component, except it is perpendicular to it:
B = Bmax sin(k x − ω t)
where B is in units of Tesla (T), and where Bmax and Emax are related by:
Emax/Bmax = c
where c is the speed of light.
So:
Bmax = Emax/c
You can plug in the numbers.