The magnetic field in a plane …
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Gaurav Seth 6 years, 10 months ago
a)
By = 12 x 10-8 sin [1.20 x 107 z + 3.60 x 1015t]
Now Bo = 12 x 10-8 T and c = 3 x 10 8 m/s
Since Eo = Bo c = 12 x 10-8 x 3 x 10 8 = 36 V/m
Energy Density = (1/2) ε0Eo2 = (1/2)(8.85 x 10-12) (36x36)
Energy Density = 5.74 x 10-15 J/m3
b)
By = 12 x 10-8 sin [1.20 x 107 z + 3.60 x 1015t]
Now k= 1.2 x 107 and w = 3.6 x 1015
Since, λ = (2π / k) and f = (w / 2π)
V = λ x f = kw = 3 x 108 m/s (approx.)
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