Question

7. The electric field of an electromagnetic wave in free
space is given by Ë = 10 cos(10't + kx) į Vim,
where t and x are in seconds and metres
respectively. It can be inferred that
(a) The wavelength 2. is 1884 m
(b) The wave number k is 0.33 rad/m
(c) The wave amplitude is 10 V/m
(d) The wave is propagating along +x direction​

Answer 1

Answer:

( C) The wave amplitude is 10 V/ m