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Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as

A. Coulomb's law

B. Joule's law

C. Faraday's law

D. Ohm's law

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  1. The magnetic flux through a wire loop in a magnetic field does not d
  2. Hydrogen is an example of a _____ material.
  3. Magnetic intensity is a
  4. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  5. The phenomenon by which a subtracts pieces of iron
  6. Electric lines of force leave or enter the charge surface at an angle of
  7. The relative permeability of a magnetic material is 10^5. What is its permeability?
  8. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  9. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  10. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  11. Magnetic effects of the earth as a huge magnet with north and south poles.
  12. A magnetic field is
  13. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  14. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  15. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
  16. When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
  17. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  18. Temporary magnets are commonly employed in
  19. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  20. An electron- volt (eV) is a unit of
  21. Defined as the number of lines per unit area through any substance in a plane at right angles to the…
  22. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  23. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  24. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  25. Which element has four valence electrons?
  26. Which of the following electric quantities is vector in character?
  27. Lenz' law states that the direction of the induced emf and hence current
  28. One that has magnetic poles produced by internal atomic structure with no external current necessary
  29. The temperature coefficient of resistance of eureka is
  30. Which of the following is a vector quantity?