Question

The electric field in an e.m. wave is given by
E = (50 N/C) sin (wt - wx/c)
Find the energy cotnained in a cylinder of cross section 10 cm^2
and length 50 cm along the x-axis
(a) 1.9 x 10-16 J
(b) 2.3 x 10-14J
(c) 5.5 x 10-12 J
(d) 5.3 x 10-10 J​

Answer 1

Explanation:

The electric field in an electromagnetic wave is given by E(50N(C-1))sinω(t-xc). Find the energy contained in a cylinder of cross section 10 cm^2 and length 50 cm along the x- axis. =1.1×(10-8)Jm-3.

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