question

(a) how are electro-magnetic waves produced ? depict an electromagnetic wave propagating in z-direction with its magnetic field oscillating along x-direction.

(b) write two characteristics of electro-magnetic waves.

 

 

 

 

 

 

a) when a charged particle oscillates with some frequency, so, it produces an oscillating electric field in space which further produces an oscillating magnetic field and thus, in turn,is a source of electric field and this process goes on and hence, an electromagnetic wave propagates in the space.

b)

 electromagnetic waves are transverse in nature.
 electromagnetic waves do not get deflected by an electric or magnetic field.