Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 14

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A current of $1 A$ is used to change a parallel plate capacitor with square plates. If the area of each plate is $0.6 m^{2}$ the displacement current through an $0.3 m^{2}$ area fully between the capacitor plates and parallel to them is:

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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 15

A cylindrical region contains a uniform electric field that is along the cylinder axis and is changing with time. If

r

is distance from the cylinder axis the magnitude of the magnetic field within the region is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 16

A cylindrical region contains a uniform electric field that is parallel to the axis and is changing with time. If

r

is distance from the cylinder axis the magnitude of the magnetic field outside the region is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 17

A

0.70 m

radius cylindrical region contains a uniform electric field that is parallel to the axis and is increasing at the rate of

5.0 \times 10^{12} V {ms}^{- 1}

. The magnetic field at a point

1.2 m

from the axis has a magnitude of

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 18

A sinusoidal emf is connected to a parallel plate capacitor. The magnetic field between the plates

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 19

Which of the following equations can be used, along with a symmetry argument, to calculate the magnetic field of a long straight wire carrying current?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 20

Which of the following equations can be used to show that magnetic field lines form closed loops?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 21

If the amplitude of the electric field in a plane electromagnetic wave is

100 V m^{- 1}

then the amplitude of the magnetic field is

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

For an electromagnetic wave the direction of the vector

\vec{E} \times \vec{B}

gives