Electromagnetic Waves

The concept of displacement current is used to explain current flow in which of the following?

Is displacement current a vector or a scalar quantity?

Which of Maxwell's equations is sometimes referred to as the Ampere-Maxwell Law?

What is the displacement current if a constant voltage is applied to a capacitor after it is fully charged?

Maxwell's introduction of displacement current led to the conclusion that light is:

For a parallel plate capacitor, the displacement current $I_d$ is given by $I_d = C \frac{dV}{dt}$. This formula is valid:

The displacement current density $J_d$ is related to the electric displacement vector $D$ as:

The displacement current was first proposed by:

The magnitude of the magnetic field induced at the edge of the plates of a circular capacitor of radius $R$ during charging is $B_0$. What is the magnetic field at a distance $r = 2R$ from the axis?

At very high frequencies, in a capacitor with a dielectric, which current dominates if the dielectric is slightly conducting?

The intensity of an electromagnetic wave is defined as the:

Which part of the electromagnetic spectrum is used in astronomical telescopes like the Hubble Space Telescope to observe distant stars in the UV range?

Which of the following scientists demonstrated that an Indian scientist JC Bose also contributed significantly to the production of short wavelength radio waves?

The pressure exerted by an electromagnetic wave on a surface is called:

Which of the following radiations has a wavelength just longer than the wavelength of red light?

An electromagnetic wave has a frequency of $2 \text{ GHz}$. The wavelength of this wave in vacuum is:

If the electric field vector is given by $\vec{E} = E_0 \hat{j}$ and the magnetic field vector is given by $\vec{B} = B_0 \hat{k}$, then the Poynting vector, which represents the energy flow, is in the direction of:

If the wavelength of an EM wave is $\lambda$, then the momentum of a photon is $h/\lambda$. If the intensity of the wave is $I$, the number of photons crossing unit area per unit time is:

A microwave oven operates at $2.45 \text{ GHz}$. What is the distance between the nodes of the standing waves formed inside the oven?

Calculate the RMS value of the electric field if the peak magnetic field is $1.414 \times 10^{-6} \text{ T}$.