Question

# A particle with charge 1.60×10−19 C is placed on the x axis in a region where...

A particle with charge 1.60×10−19 C is placed on the x axis in a region where the electric potential due to other charges increases in the +x direction but does not change in the y or z direction.

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 1.44×10−18 J . In what direction and through what potential difference VbVa does the particle move?

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PartA

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 1.44×10−18 {\rm J} . In what direction and through what potential difference V_b-V_a does the particle move?

A The particle moves to the left through a potential difference of VbVa= 9.00 V .
B The particle moves to the left through a potential difference of VbVa= -9.00 V
C The particle moves to the right through a potential difference of VbVa= 9.00 V .
D The particle moves to the right through a potential difference of VbVa= -9.00 V .
E The particle moves to the left through a potential difference of VbVa= 90.0 V .

F The particle moves to the right through a potential difference of VbVa= -90.0 V .

Part B If the particle moves from point b to point c in the y direction, what is the change in its potential energy, UcUb ?

 A + 1.44×10−18 J B − 1.44×10−18 J C 0