- AMaxwell
- BMarconi
- CAmpere
- DHertz
Explanation:
In electromagnetism, displacement current is a quantity appearing in Maxwell's equations that is defined in terms of the rate of change of electric displacement field.
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In frequency modulation
|
(a) The amplitude of modulated wave varies as frequency of carrier wave |
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(b) The frequency of modulated wave varies as amplitude of modulating wave |
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(c) The amplitude of modulated wave varies as amplitude of carrier wave |
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(d) The frequency of modulated wave varies as frequency of modulating wave |
An electric kettle has two heating coils. When one coil is used, water in the kettle boils in 5 minutes, while when second coil is used, same water boils in 10 minutes. If the two coils, connected in parallel are used simultaneously, the same water will boil in time
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(a) 3 min 20 sec |
(b) 5 min |
(c) 7 min 30 sec |
(d) 2 min 30 sec |
Holes are charge carriers in
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(a) Intrinsic semiconductors |
(b) P-type semiconductors |
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(c) Metals |
(d) a, b |
The potential energy of a particle of mass m is given by
U(x) = ![]()
l1 and l2 are the de-Broglie wavelengths of the particle, when 0 £ x £ 1 and x > 1 respectively. If the total energy of particle is 2E0, the ratio
will be
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(a) 2 |
(b) 1 |
(c) |
(d) |
One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of A is given equal amount of negative charge. Then
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(a) Mass of A and mass of B still remain equal |
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(b) Mass of A increases |
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(c) Mass of B decreases |
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(d) Mass of B increases |