Physics 9702 · AS & A Level · Potential difference and power

Potential difference and power — practice question

A charge of $2.6 \times 10^{-8}\,\text{C}$, which is positive, is in an electric field with a constant field strength of $300\,000\,\text{V m}^{-1}$. What amount of work is required to move the charge a distance of $4.0\,\text{mm}$ in the direction opposite to the field?

  • A$3.1 \times 10^{-5}\,\text{J}$
  • B$2.0 \times 10^{-3}\,\text{J}$
  • C$3.1 \times 10^{-2}\,\text{J}$
  • D$2.0\,\text{J}$

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