Home

Who discovered superconductivity in 1911?

A. Kamerlingh Onnes

B. Alex Muller

C. GeoryBednorz

D. Charles Coulomb

You can do it
  1. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
  2. Germanium atom has ______ protons and ______ electrons.
  3. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  4. Cobalt is an example of a ______ material.
  5. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  6. A PHP Error was encountered

    Severity: Notice

    Message: iconv_strlen(): Detected an illegal character in input string

    Filename: compat/mbstring.php

    Line Number: 77

    Backtrace:

    File: /var/www/html/application/views/discuss.php
    Line: 209
    Function: character_limiter

    File: /var/www/html/application/helpers/viewloader_helper.php
    Line: 1359
    Function: view

    File: /var/www/html/application/controllers/Questions.php
    Line: 484
    Function: load_guest

    File: /var/www/html/index.php
    Line: 315
    Function: require_once

    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
  7. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  8. Flux density is measured in
  9. How much is the flux in Weber in the above problem?
  10. If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
  11. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  12. The straight line passing through the two poles of magnet is called
  13. Another term for corona discharge.
  14. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  15. Who developed the electromagnetic theory of light in 1862?
  16. When the relative permeability of a material is much greater than 1a it is called _______ material.
  17. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  18. Ohm's law cannot be applied to which material?
  19. How is mutual inductance between two coils decreased?
  20. Lenz's law is the consequence of the law of conservation of
  21. A PHP Error was encountered

    Severity: Notice

    Message: iconv_strlen(): Detected an illegal character in input string

    Filename: compat/mbstring.php

    Line Number: 77

    Backtrace:

    File: /var/www/html/application/views/discuss.php
    Line: 209
    Function: character_limiter

    File: /var/www/html/application/helpers/viewloader_helper.php
    Line: 1359
    Function: view

    File: /var/www/html/application/controllers/Questions.php
    Line: 484
    Function: load_guest

    File: /var/www/html/index.php
    Line: 315
    Function: require_once

    When the current flowsa the magnetic field . conductor is in what direction?
  22. The magnetic field of a bar magnet most closely resembles the magnetic field of
  23. Which of the following electric quantities is vector in character?
  24. Which of the following is a diamagnetic material?
  25. The resistivity of a conductor ___________ with an increase in temperature.
  26. What is the SI unit of magnetic flux?
  27. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  28. Which of the following has the least number of valence electrons?
  29. The electric flux density is a ________ quantity.
  30. What is the diameter of an atom?