The Total solution for NCERT class 6-12
At a certain location inAfrica, a compass points 12º west of the geographic north. The north tip of themagnetic needle of a dip circle placed in the plane of magnetic meridian points60º above the horizontal. The horizontal component of the earth’s field ismeasured to be 0.16 G. Specify the direction and magnitude of the earth’s fieldat the location.
Angle of declination,θ =12°
Horizontal component ofearth’s magnetic field, BH = 0.16 G
Earth’smagnetic field at the given location = B
Earth’s magnetic fieldlies in the vertical plane, 12° West of the geographic meridian, making anangle of 60° (upward) with the horizontal direction. Its magnitude is 0.32G.