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Physics (AS & A Level) · May / June 2022 · Paper 13 · Question 34

9702Resistance and resistivity

A fixed resistor and a filament lamp are connected in series to a power supply. The I–V characteristics for the two components are shown. [graphs of fixed resistor and filament lamp] The current in the fixed resistor is 0.34 A. What is the resistance of the filament lamp?

  1. A0.081 Ω
  2. B12 Ω
  3. C15 Ω
  4. D18 Ω

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Correct answer: B. 12 Ω

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