A proton is to circulate the earth along the equator with a speed of `1*0xx10^7ms^-1`
Channel: Doubtnut
Date: 2020-08-02

A proton is to circulate the earth along the equator with a speed of `1*0xx10^7ms^-1`. Find the minimum magnetic field which should be created at the equator for this purpose. The mass of proton `=1*7xx10^(-27)kg` and radius of earth `=6*37xx10^6m`.