Part A The particle, initially at rest, is acted upon only by the electric force

Question

Part A

The particle, initially at rest, is acted upon only by the electric force and moves from point a to point b along the x axis, increasing its kinetic energy by 1.12×1018 . In what direction and through what potential difference does the particle move?

The particle moves to the left through a potential difference of VbVa= 1.75 V . The particle moves to the left through a potential difference of VbVa= -1.75 V The particle moves to the right through a potential difference of VbVa= 1.75 V . The particle moves to the right through a potential difference of VbVa= -1.75 V . The particle moves to the left through a potential difference of VbVa= 17.5 V . The particle moves to the right through a potential difference of VbVa= -17.5 V .

Explanation / Answer

In general, if no forces other than the electric force act on a positively charged particle, the particle always moves toward a point at lower potential

The particle moves to the left through a potential difference of VbVa= -1.75 V

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