Electromagnetic...

Which of the following is the right derivation for Ampere-Maxwell law? 

What is the frequency of electromagnetic waves in a vacuum that have the same wavelength as a 500.0 Hz sound wave moving at 345 m/s?

Which of the following statement(s) is/are correct?

What is the frequency of electromagnetic waves in a vacuum that have the same wavelength as a $$500.0\ Hz$$ sound wave moving at $$345\ m/s$$?

Radiations of intensity 0.5 W/m2 are striking a metal plate. The pressure on the plate is

A $$1000\Omega $$ resistance and a capacitor of $$100\Omega $$ resistance are connected in series a $$220 V$$ source. when the capacitor is 50% charged, the value of the displacement current is.

A parallel plate capacitor having plate area A and plate separation $$d$$ is connected to a battery of emf $$\varepsilon$$ and internal resistance $$R$$ at $$t=0$$. Consider a plane surface of area $$\dfrac{A}{2}$$, parallel to the plates and situated symmetrically between them. Find the displacement current through this surface as a function of time?

A parallel plate capacitor consists of circular plates with radius $$10 cm$$ , separated by a distance of $$0.5mm$$. The capacitor is charged by an external source such that the electric field between the plates changes at a rate $$5 \times 10^{13} Vm{-1}s{-1}$$. The displacement current through the capacitor is  

A plane electromagnetic wave of frequency 20 MHz travels through a space along x direction. If the electric field vector at a certain point in space is 6 V $$m^{-1}$$, what is the magnetic field vector at that point?

A parallel plate capacitor with plate area A and separation between the plates $$d$$, is charged by a constant current $$i$$. Consider a plane surface of area $$\dfrac{A}{2}$$ parallel to the plate and down symmetrically between the plates. Find the displacement current through this area.