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

Potential difference and power — practice question

A $100\,\Omega$ resistor carries a current whose direction and magnitude vary, as shown. What is the average power dissipated in the resistor?

  • A$100\,\text{W}$
  • B$150\,\text{W}$
  • C$250\,\text{W}$
  • D$400\,\text{W}$

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