Electromagnetic...

The electric field intensity at a point in vacuum is equal to

Displacement current goes through the gap between the plates of a capaitor when the charge of the capacitor:
(i) does not change
(ii) change with time
(iii) increases
 (iv) decreases

A parallel plate condenser consists of two circular plates each of radius $$2cm$$ separated by a distance of $$0.1mm$$. A time varying potential difference of $$5\times {10}^{13}v/s$$ is applied across the plates of the condenser. The displacement current is:

Electromagnetic wave of intensity $$1400\ W/m^{2}$$ falls on metal surface on area $$1.5\ m^{2}$$ is completely absorbed by it. Find out force exerted by beam.

A plane electromagnetic wave of frequency $$28MHz$$ travels in free space along the positive x-direction. At a particular point in space and time, electric field is $$9.3V/m$$ along positive y-direction. The magnetic field (in T) at that point is 

A parallel plate condenser of capacity $$1 nF$$ is connected to a battery of emf $$2v$$ though a resistance of $$1M \Omega$$. The displacement current after $$10^{-3}\ \sec$$ is:

At a particular instant, the current in the circuit given below is i. The displacement current between the plates of the capacitor shown below is

A parallel plate condenser has circular plates$$,$$ each of radius $$5cm.$$ It is being charged so that electric field in the gap between its plates rises steadily at the rate of $${10^{12}}V/ms.$$  What is the displacement current$$?$$ 

In an electromagnetic wave,
$$E = 1.2\sin (2\times 10^{-6} t - kx)N/C$$.
Find value of intensity of magnetic field.
$$4\times 10^{-8} field.$$

The electric and the magnetic field, associated with an E.M. wave , propagating along the $$+z$$ axis, can be represented by