Physics 5054 · O Level · Electromotive force and potential difference

Electromotive force and potential difference — practice question

When a camera flash is used, a charge of $1.5\,\text{C}$ passes for $0.0030\,\text{s}$ through the flash lamp. The mean voltage across the flash lamp is $3600\,\text{V}$. Calculate the electrical energy delivered to the flash lamp and the average power delivered.

  • A$2400\,\text{J},\;7.2\,\text{W}$
  • B$2400\,\text{J},\;8.0\times10^{5}\,\text{W}$
  • C$5400\,\text{J},\;16.2\,\text{W}$
  • D$5400\,\text{J},\;1.8\times10^{6}\,\text{W}$

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