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May 30, 2015

Homework Help: Physics

Posted by Cici on Tuesday, December 28, 2010 at 8:51pm.

Consider an electron entering a region between two charged metal plates where, aside from the electric field E, there is also a constant magnetic field B directed into the paper. V is the velocity of the electron (from left to right direction).

a)Write an expression for the electric and magnetic force.

b) It is observed that if B= 1.5 T and E=5.5 x 10^3 V/m, the electron keeps moving in a straight line. Find the speed of the electron (Assume there is no effect of gravity)

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