Instantaneous displacement current of 2.0 A is set up in the space between two parallel plates of \(1~\mu F\)$$ capacitor. The rate of change in potential difference across the capacitor is:

1. $3\times {10}^6$ $V/s$

2. $4\times {10}^6$ $V/s$

3. $2\times {10}^6$ $V/s$

4. None of these

A capacitor is having a capacity of 2 pF. The electric potential across the capacitor is changing with a value of \(10^{12}~\mathrm{V/s}\). The displacement current is:

If a source is transmitting an electromagnetic wave of frequency $8.2\times {10}^6$ $Hz$, then the wavelength of the electromagnetic wave transmitted from the source will be:

Light is a kind of wave. The wavelength of visible light ranges from about 4000 \(\overset{o}{A}\) to 7000 \(\overset{o}{A}\). Which of the following statements is false?

A plane electromagnetic wave travels in free space along x-axis. At a particular point in space, the electric field along y-axis is 9.3 $V{m}^{-1}$. The magnetic induction is:

1. $3.1\times {10}^{-8}$ $T$

2. $3\times {10}^{-5}$ $T$

3. $3\times {10}^{-6}$ $T$

4. $9.3\times {10}^{-6}$ $T$

In an electromagnetic wave, energy density associated with a magnetic field will be:

1. $\frac{1}{2}L{I}^2$

2. $\frac{B^2}{2{\mu }_0}$

3. $\frac{1}{2}{\mu }_0{B}^2$

4. $\frac{1}{2}\frac{q}{B^2}$

A variable frequency AC source is connected to a capacitor. Then on increasing the frequency:

Consider an electric charge oscillating with a frequency of 10 MHz. The radiation emitted will have a wavelength equal to:

The S.I. unit of displacement current is:
1. Henry
2. Coulomb
3. Ampere
4. Farad