The magnetic field of earth is due to:

  1. Home
  2. Back

Question:
The magnetic field of earth is due to:

1.induction effect of the sun

2.the presence of a large magnet at the centre of the earth

3.interaction of cosmic rays with the current of earth

4.motion and distribution of some material in an outside the earth

Posted Date:-2021-12-16 12:48:42

More MCQS Questions and answers

  1. A current carrying power line carries current from west to east. What will be direction of magnetic field 1 meter above it?
  2. A magnetic dipole moment is a vector quantity directed from:
  3. A wire of length I has a magnetic moment M. It is then bent into a semi-circular arc. The neyv magnetic moment is :
  4. Ferrites may be:
  5. In a bar magnet, magnetic lines of force z :
  6. In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is :
  7. On quadrupling the moment of inertia of a magnet, its frequency of oscillation will become:
  8. S.I. unit of flux is :
  9. Tangent law is applicable only when:
  10. The dimensional representation of l/MB−−−−−√ is similar to that of:
  11. The dimensional representation of magnetic flux density is :
  12. The force between two parallel wire 2 × 10-7 Nm-1, placed 1 m apart to each other in vacuum. The electric current flowing through the wires is:
  13. The magnetic field at the centre of a current carrying circular loop is B. If the radius of the loop is doubled keeping the current unchanged, the magnetic field at the centre of loop will become:
  14. The magnetic field of earth is due to:
  15. The magnetic field strength due to a short bar magnet directed along its axial line at a distance r is B. What is its value at the same distance along the equatorial line?
  16. The magnetic lines of force inside a bar magnet:
  17. The Mariner’s compass is provided with Gimbals arrangement so as to :
  18. The neutral point in the magnetic field of a horizontally placed bar magnet is a point where the magnetic field due to that bar magnet is:
  19. The radius of curvature of the path of charged particle in a uniform magnetic file is directly proportional to the
  20. What is the angle of dip at a place where the horizontal component of earth’s magnetic field is equal to the vertical component?
  21. Which of the following has a low value in ferrites?
  22. Which of the following has higher magnetic susceptibility?
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!