The dashed lines in the figure below represent equipotentials(with magnitudes la

Question

The dashed lines in the figure below represent equipotentials(with magnitudes labeled in the margins of the drawing) in a region in which there is an electric field. Also shown are four circles at different distances from point p. Six points on these circles are labeled A to F. A negatively charged point partical is released starting from rest at P. It will accelerate subject to the electric force on it. Which of the following describes a possible path that the negatively charged particle will follow after it is released from rest? It will move away from P and (a) cross the 30 V equipotential first, then it will turn around and cross the 20 V equipotential followed by the 10 V equipotential. cross the 30 V equipotential first and then it will cross the 40 V equipotential. follow the 20 V equipotential passing through point E. cross the 10 V equipotential first and then it will cross the 0 V equipotential cross the 10 V equipotential first, then it will turn around and cross the 20 V equipotential followed by the 30 V equipotential.

Explanation / Answer

D)cross the 10v equipotential first and then it will cross the 0v equipotential. VPA=VA-VP=30V-20V=10V & VPE=VE-VP=20-20=0V

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