Near the equator, the Earth's magnetic field points almost horizontally to the north and has magnitude B=.5 x 10^-4T. What should be the magnitude and direction of the velocity of an electron if its weight is to be exactly balanced by the magnetic force?
Base in your question about the magnetic field of the Earth near the equator where as its almost horizontally to the north and has magnitude of B=0.5x10^-4t, the answer is Velocity of electron will be westwards.
