a. When viewed from behind (i.e., the electron is moving away from you) what dir

Question

a. When viewed from behind (i.e., the electron is moving away from you) what direction does the electron appear to be going around (clockwise or counter clockwise)?

b. What is the electron

An electron is traveling with a velocity vector v = v hat i when a uniform magnetic field B = A hat i + A hat j is turned on. a. When viewed from behind (i.e., the electron is moving away from you) what direction does the electron appear to be going around (clockwise or counter clockwise)? b. What is the electron's displacement after it completes one circle?

Explanation / Answer

a) The direction of motion of the electron maybe be obtained using Fleming's left hand rule. This would show that the electron would move in the counter clockwise direction if the electron is moving into the paper as the thumb would be pointing to the left..

b) The electron will follow a circular path. The magnetic force, being perpendicular to the velocity, provides the necessary centripetal force and thus after one complete circle the displacement( not distance) will be zero..

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