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?

Question

experimentx · Answer

F = mg = e vxB = Bev sin 	heta = BeV (	heta is 90)

I still think there might be something wrong with question.

anonymous · Answer

do you think they mean points vertically north?

experimentx · Answer

can you draw the picture of electron and magnetic field??

anonymous · Answer

it didn't give an image but i would say they are perpendicular so that V is perpendicular to magnetic field

anonymous · Answer

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anonymous · Answer

well, that would be my guess it could also point the other way

anonymous · Answer

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experimentx · Answer

if V is perpendicular to magnetic field, then you will have maximum lorentz force.

experimentx · Answer

and one more thing, the magnetic field will move electron in circular path

experimentx · Answer

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