Question

An EM wave radiates outwards from a dipole antenna, with
E₀ as the amplitude of its electric field vector. The electric
field E₀ which transports significant energy from the source
falls off as
(a) 1/r³
(b) 1/r²
(c) 1/r
(d) remains constant

Answer 1

Answer:

C

Solution :

From a dipole antenna, the electromagnetic waves are radiated outwards. The amplitude of electric field vector E0 which transports significant energy from the source falls off inversely as the distance r from the antenna i.e., E0∝1r.

Answer 2

Answer:

b

Explanation:

e0 you have to first find radiant