Question

question 7
"
displacement currents are present in a travelling electromagnetic wave and we may associate the magnetic field component of the wave with these currents." is this statement true? Discuss it in. detail

Answer 1

Explanation:

Displacement Current is defined to be:

Id = ( dE/dt)

Displacement Current plays a central role in the propagation of electromagnetic radiation,such as light and radio waves , through empty space. A travelling varying magnetic field is everywhere associated with a periodically changing electric field that may be conceived in terms of a displacement current.

It is produced , however by changing electric field . It accounts for a changing electric field producing a magnetic field, just as a real current does, but displacement current can produce a magnetic field even where no real current is present.

So, Statement is True.