A-LevelPhysicsD.C. circuitsOct/Nov 2010Paper 1 Q371 Mark
Three resistors, with resistances R₁, R₂ and R₃, are connected in series and are found to have a combined resistance of 500 Ω. When connected in parallel, the combined resistance is found to be 50 Ω. Which values will correspond to these results?
AR₁/Ω: 160, R₂/Ω: 160, R₃/Ω: 80
BR₁/Ω: 200, R₂/Ω: 200, R₃/Ω: 100
CR₁/Ω: 225, R₂/Ω: 225, R₃/Ω: 50
DR₁/Ω: 230, R₂/Ω: 230, R₃/Ω: 40
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The correct answer is B. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
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