The dimensions of ${\epsilon }_0\frac{d{\varphi }_E}{dt}$ is

Important Questions on Electromagnetic Waves

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>EXERCISE>Q 3

If electric field is changing at rate of $6\times {10}^6 \mathrm{V} {\mathrm{ms}}^{-1}$ between the plates of a capacitor, having plate area $2.0{ \mathrm{cm}}^2$, then the displacement current is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>EXERCISE>Q 4

An electromagnetic wave is propagating in vacuum along z-axis, the electric field component is given by $E_x=E_0\sin (kz-\omega t)$, then magnetic component is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>EXERCISE>Q 5

The dimensional formula of ${\mu }_0{\epsilon }_0$ is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>EXERCISE>Q 6

An electromagnetic wave consists of oscillating electric and magnetic field vector. The phase difference between the two oscillating field is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>EXERCISE>Q 7

If $\overrightarrow{E}$ and $\overrightarrow{B}$ represent the electric and magnetic field vectors of the electromagnetic waves, then the direction of propagation of the electromagnetic waves is that of

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 1

If in a region there is a time varying electric field then which of the following Maxwell's equation will be most suitable?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 2

Which of the following electromagnetic radiations is used for viewing through haze and fog?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 3

An electromagnetic wave travels in a medium with speed $2\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$. If relative permeability of medium is $1.0$, then relative permittivity is