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

Potential difference and power — practice question

What is the mean power output of a laser that delivers $0.20\,\text{J}$ of energy in $10\,\text{ns}$?

  • A$2\,\text{nW}$
  • B$20\,\text{mW}$
  • C$200\,\text{kW}$
  • D$20\,\text{MW}$

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