CBSE
The magnetic susceptibility of a material of a rod is 499. The absolute permeability of vacuum is 4 x 10-7 Hm-1 . The absolute permeability of the material of rod is
Magnetic field intensity H at the centre of a circular loop of radius r carrying current I emu is
The intensity of magnetization of a bar magnet is 5.0 x 104 Am-1.The magnetic length and the area of cross section of the magnet are 12 cm and 1cm2 respectively. The magnitude of magnetic moment of this bar magnet is (in SI unit)
0.6
1.3
1.24
2.4
At a certain place, the horizontal component of earth's magnetic field is times the vertical component. The angle of dip at that place is
30°
60°
45°
90°