At the equator near the surface of Earth the magnetic field

At the equator, near the surface of Earth, the magnetic field is approximately 39.0

Gravitational force = m*g

= 9.1*10^-31*9.8

= 8.918*10^-30 kg (down ward)

Electric force = q*E

= 1.6*10^-19*150

= 2.4*10^-17 N (upward) (beacuse elelctron has negative charge. negative charges always attracted towards oppsote to electric filed)

magnetic force = q*v*B

= 0 (magnetic filed exert force on only moving charged partcicles)