What is Displacement current??
Answers
In electromagnetism, displacement current density is the quantity ∂D/∂t appearing in Maxwell's equations that is defined in terms of the rate of change of D, the electric displacement field. Displacement current density has the same units as electric current density, and it is a source of the magnetic field just as actual current is. However it is not an electric current of moving charges, but a time-varying electric field. In physical materials (as opposed to vacuum), there is also a contribution from the slight motion of charges bound in atoms, called dielectric polarization.
Answer:
Explanation:
It was first discovered by maxwell.
Actually there are two types of currents-
1.conventional current
2.displacement current.
Drift current is caused by charge drift and can be found only in conductors, while displacement current are found in insulators.
e.g.
The current between the plates of a capacitor are displacement current.
If we denote drift current as 'ic' and displacement current as 'id', and 'i' as total current then,
ic+id=i.