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. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  2. A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
  3. The temperature coefficient of resistance of insulators is
  4. The magnetic field of a magnetized iron bar when strongly heated
  5. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
  6. Which of the following statements is TRUE?
  7. When the relative permeability of a material is much greater than 1a it is called _______ material.
  8. Ohm's law cannot be applied to which material?
  9. What determines the value of the temperature coefficient of resistance of a material?
  10. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  11. Electric lines of force leave or enter the charge surface at an angle of
  12. What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
  13. An atom or a group of atoms that carries a net electric charge.
  14. The B-H curve for ________ is a straight line passing through the origin.
  15. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  16. Steel is hard to magnetize because of its
  17. Materials whose permeabilities are slightly greater than that of free space
  18. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  19. The air space between poles of magnets
  20. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
  21. Calculate the permeability (in T/A. t/m) of a magnetic material that has a relative permeability of…
  22. One ampere- turn is equivalent to _____ gilberts
  23. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  24. The diameter of a hydrogen atom is approximately ______ cm.
  25. Hipernik is an alloy containing __________ iron and __________ nickel.
  26. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  27. What is the SI unit of reluctance?
  28. How many neutrons does a copper atom have?
  29. There are how many compounds available in nature?
  30. Temporary magnets are commonly employed in