Home

The magnetic field of a bar magnet most closely resembles the magnetic field of

A. a horseshoe magnet

B. a straight current- carrying wire

C. a stream of electrons moving parallel to one another

D. a current- carrying wire loop

You can do it
  1. What is the SI unit of conductance?
  2. ______ is an electromagnet with its core in the form of a close magnetic ring.
  3. One that has magnetic poles produced by internal atomic structure with no external current necessary
  4. Which of the following is a natural magnet?
  5. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  6. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  7. Referred to as the specific reluctance of a material
  8. Magnetic fields do not interact with
  9. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  10. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  11. The diameter of a hydrogen atom is approximately ______ cm.
  12. Which of the following is a vector quantity?
  13. This paper does not exhibit electricity because it contains the same number of
  14. The permeability of permalloy is
  15. What is used as the insulating material or dielectric in an electric ion
  16. The electrons in the last orbit of an atom are called _______ electrons.
  17. Cobalt is an example of a ______ material.
  18. The electric potential across part AB of a circuit is 5 V; point A being at higher potential. If a charge…
  19. The evaporation of electrons from a heated surface is called
  20. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  21. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  22. Amorphous solid is also called
  23. What is the typical saturation flux density for most magnetic materials?
  24. A 200-watt lamp working for 24 hours will consume approximately _____ units.
  25. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  26. Hydrogen is an example of a _____ material.
  27. Electric field intensity is measured in
  28. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  29. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  30. There are how many compounds available in nature?