An electron moves with a velocity v in an electric field E. If the angle between v and E is neither 0 nor π, the path followed by the electron is?
A
Parabola
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B
Circle
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C
Straight line
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D
Ellipse
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Solution
The correct option is D Parabola As the angle between v and E is neither zero nor π, a constant force (−qE) will act on the electron. The motion of the electron, therefore will be along a parabola.