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. 3×106 V/s

2. 4×106 V/s

3. 2×106 V/s

4. None of these

Subtopic:  Displacement Current |
 87%
From NCERT
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The S.I. unit of displacement current is:
1. Henry
2. Coulomb
3. Ampere
4. Farad

Subtopic:  Displacement Current |
 88%
From NCERT
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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:

1. 2 A 2. 3 A
3. 6 A 4. 9 A
Subtopic:  Displacement Current |
 90%
From NCERT
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A variable frequency AC source is connected to a capacitor. Then on increasing the frequency:

1. Both conduction current and displacement current will increase
2. Both conduction current and displacement current will decrease
3. Conduction current will increase and displacement current will decrease
4. Conduction current will decrease and displacement current will increase
Subtopic:  Displacement Current |
 73%
From NCERT
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The charge of a parallel plate capacitor is varying as q=q0sinωt. Find the magnitude of displacement current through the capacitor. 
(Plate Area = A, separation of plates = d)

1. q0cos(ωt)

2. q0ωsin ωt

3. q0ωcosωt

4. q0Aωdcosωt

Subtopic:  Displacement Current |
 72%
From NCERT
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A larger parallel plate capacitor, whose plates have an area of 1 m2, separated from each other by 1 mm, is being charged at a rate of 25.8 V/s. If the plates have dielectric constant 10, then the displacement current at this instant is:

1. 25 μA

2. 11 μA

3. 2.2 μA

4. 1.1 μA

Subtopic:  Displacement Current |
 68%
From NCERT
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The maxwell's equation:

B.dl=μ0i+ε0.dϕEdt is a statement of :

1. Faraday's law of induction
2. Modified Ampere's law
3. Gauss's law of electricity
4. Gauss's law of magnetism

Subtopic:  Maxwell's Equations |
 86%
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The figure shows a parallel plate capacitor being charged by a battery. If X and Y are two closed curves then during charging, B.dl is zero along the curve:

   

1. X only
2. Y only
3. Both X & Y
4. Neither X nor Y

Subtopic:  Maxwell's Equations |
From NCERT
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If a source is transmitting an electromagnetic wave of frequency 8.2×106 Hz, then the wavelength of the electromagnetic wave transmitted from the source will be:

1. 36.6 m 2. 40.5 m
3. 42.3 m 4. 50.9 m
Subtopic:  Generation of EM Waves |
 88%
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Out of the following options which one can be used to produce a propagating electromagnetic wave?

1. a stationary charge.
2. a chargeless particle.
3. an accelerating charge.
4. a charge moving at constant velocity.

Subtopic:  Generation of EM Waves |
 88%
From NCERT
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