The Total solution for NCERT class 6-12
A magnetic needle freeto rotate in a vertical plane parallel to the magnetic meridian has itsnorth tip pointing down at 22º with the horizontal. The horizontal component ofthe earth’s magnetic field at the place is known to be 0.35 G. Determine themagnitude of the earth’s magnetic field at the place.
Horizontal component ofearth’s magnetic field, BH = 0.35 G
Earth’s magneticfield strength = B
Hence, the strength ofearth’s magnetic field at the given location is 0.377 G.