An electron is ejected from the surface of a long, thick straight conductor carrying a current, initially in a direction perpendicular to the conductor. The electron will
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a
ultimately return to the conductor
b
move in a circular path around the conductor
c
gradually move away from the conductor along a spiral
d
move in a helical path, with the conductor as the axis
answer is A.
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Detailed Solution
The initial force on the electron is downward. As the electron changes direction, the force on it remains in teh xy plane, with a component directed toward the conductor.
An electron is ejected from the surface of a long, thick straight conductor carrying a current, initially in a direction perpendicular to the conductor. The electron will