Exercise 1

Consider a parallel plate capacitor which is maintained at potential of $200 V$. If the separation distance between the plates of the capacitor and area of the plates are $1 mm$ and $20 c{m}^2$. Calculate the displacement current for the time in $1 \mu s$.

Discuss Maxwell's modification of Ampere's circuital law.

 What do you understand by the statement, “Electromagnetic waves transport momentum”?

A magnetron in a microwave oven emits electromagnetic waves with frequency $f=2450 MHz$. What magnetic field strength is required for electrons to move in circular paths with this frequency?

Electric field amplitude of electromagnetic wave is $240 {\mathrm{NC}}^{-1}$ and frequency $50 \mathrm{MHz}$, if the wave is propagating along $\mathrm{x}-\mathrm{axis}$ then equation of wave for electric field is

Electromagnetic waves travelling in a medium having relative permeability ${\mathrm{\mu }}_{\mathrm{r}}=1.3$ and relative permittivity ${\epsilon }_r=2.14$ . The speed of electromagnetic waves in the medium must be 

Electric field of two light waves have amplitude $80 \mathrm{N}/\mathrm{C}$ and $60 \mathrm{N}/\mathrm{C}$. The ratio of maximum to minimum intensity when the waves interfere, is

The electric field of a plane electromagnetic wave propagating along the z-axis varies with time with an amplitude of $2\mathrm{ }\mathrm{V} {\mathrm{m}}^{-1}$. The average energy density of the magnetic field (in $\mathrm{J}\mathrm{ }{\mathrm{m}}^{-3}$) is :

Take: ${\mathrm{\epsilon }}_0=8.854\times {10}^{-12} \mathrm{F} {\mathrm{m}}^{-1}$