A-LevelPhysicsD.C. circuitsMay/June 2021Paper 1 Q381 Mark
Two resistors are connected in series with a 6.0 V power supply, as shown. [Figure 38.1] What is the resistance of the variable resistor R to give a potential difference of 1.0 V across the 12 kΩ resistor?
A2.0 kΩ
B10 kΩ
C60 kΩ
D72 kΩ
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The correct answer is C. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
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