Question
What is the approximate distance upto which earth's magnetic field extends?
Solution
The magnetic field of earth extends to nearly five times the radius of the earth.
i.e., 5 x (6.4 x 103) km = 3.2 x 104 km.
where, radius of the earth, r= 6.4 x 103
i.e., 5 x (6.4 x 103) km = 3.2 x 104 km.
where, radius of the earth, r= 6.4 x 103