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

Potential difference and power — practice question

A fixed resistor with resistance $12\,\Omega$ is connected to a battery. A current of $0.20\,\text{A}$ flows through the resistor. The current is then doubled. What is the new power dissipated in the resistor?

  • A$0.48\,\text{W}$
  • B$0.96\,\text{W}$
  • C$1.9\,\text{W}$
  • D$4.8\,\text{W}$

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