Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 41

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Earn 100

The electric field between the plates of a parallel plate capacitor having plate area $4 {cm}^{2}$ is changing at the rate of $3 \times 10^{12} N C^{- 1} s^{- 1}$ . The displacement current is _____ $mA$ .

Give an answer to the nearest integer value.

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Important Questions on Electromagnetic Waves

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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 4

Which physical quantity is same for

X -

rays and

γ

-

rays in vacuum?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 42

An electromagnetic wave propagating through vacuum is given by

B = 2.0 \times 10^{- 6} \sin (k x - 3.0 \times 10^{6} t) T

where

x

is in metre and

t

is in second. The value of

k

is _____

m^{- 1}

.

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 43

The dimensional formula of

\frac{μ_{0} d ϕ_{E}}{d t}

where

ϕ_{E}

represents electric flux and

t

represents time, is

[M^{a} L^{b} T {}^{c}I^{d}]

. Find

| (a + b + c + d) |

.

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 44

The amplitude of magnetic field at a distance

r

from a point source of power

P

(considering

100 %

efficiency) is

\sqrt{\frac{μ_{0} P}{k π r^{2} C}}

, the value of

k

is _____ .

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

The dimensions of

ε_{0} \frac{d ϕ_{E}}{d t}

is

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

The dimensional formula of

μ_{0} ε_{0}

is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 5

Which of the following

EM

radiations has least wavelength?