MCQ
The displacement current was first populated by.
  • A
    Maxwell
  • B
    Marconi
  • C
    Ampere
  • D
    Hertz

Answer

  1. Maxwell

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.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In frequency modulation

(a) The amplitude of modulated wave varies as frequency of carrier wave

(b) The frequency of modulated wave varies as amplitude of modulating wave

(c) The amplitude of modulated wave varies as amplitude of carrier wave

(d) The frequency of modulated wave varies as frequency of modulating wave

A bar magnet is moved along the axis of a copper ring placed far away from the magnet, Looking from the side of the magnet an anticlockwise current is found to be induced in the ring. Which of the following may be true?
  1. The south pole faces the ring and the magnet moves towards it.
  2. The north pole faces the ring and the magnet moves towards it.
  3. The south pole faces the ring and the magnet moves away from it.
  4. The north pole faces the ring and the manget moves away from it.
In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of:

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

(a) 3 min 20 sec

(b) 5 min

(c) 7 min 30 sec

(d) 2 min 30 sec

Holes are charge carriers in

(a) Intrinsic semiconductors

(b) P-type semiconductors

(c) Metals

(d) a, b

In which of the following transitions will the wavelength be minimum?
  1. n = 5 to n = 4
  2. n = 4 to n = 3
  3. n = 3 to n = 2
  4. n = 2 to n = 1

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

(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

(a) Mass of  A and mass of  B still remain equal

(b) Mass of  A increases

(c) Mass of  B decreases

(d) Mass of  B increases

Unlike charges _____ each other.
Essential difference between electrostatic shielding by a conducting shell and magnetostatic shielding is due to: