A capacitor is made of two circular plates each of radius and separated by The capacitor being charged by an external source. The charging current is constant and equal to The displacement current across the plates is:
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2.
3.
4.
A parallel plate capacitor is made of circular plates each of radius has a capacitance The capacitor is connected to a AC supply with an (angular) frequency of The amplitude of at the point from the axis between the plate is:
1.
2.
3.
4.
1. | in the plane and they are parallel to each other. |
2. | in the plane and they are mutually perpendicular to each other. |
3. | in the plane and they are mutually perpendicular to each other. |
4. | in the plane and they are parallel to each other. |
A radio can tune in to any station in the MHz to MHz bands. What is the corresponding wavelength band?
1. to m
2. to m
3. to m
4. to m
The amplitude of the magnetic field part of a harmonic electromagnetic wave in a vacuum is . What is the amplitude of the electric field part of the wave?
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2.
3.
4.
Suppose that the electric field amplitude of an electromagnetic wave is and that its frequency is The value of propagation constant is:
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2.
3.
4.
In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of and amplitude . What is the amplitude of the oscillating magnetic field?
1.
2.
3.
4.
The electric field part of an electromagnetic wave in a vacuum is; What is the frequency of the wave?
1.
2.
3.
4.