A-Level PhysicsYear 2019Q22
page 17 22. A student sets up a circuit and measures the voltage across and the current in a resistor. The measurements and their uncertainties are voltage = (10∙0 ± 0∙1) V current = (0∙50 ± 0∙01) A The approximate absolute uncertainty in the calculated value of the resistance of the resistor is A ±0·11 Ω B ±0·2 Ω C ±0·4 Ω D ±1 Ω E ±2 Ω. 23. A circuit is set up as shown. 3·0 Ω 6·0 V 6·0 Ω − + The power supply has negligible internal resistance. The power dissipated in the 3∙0 Ω resistor is A 3∙0 W B 6∙0 W C 9∙0 W D 12 W E 18 W. [Turn over
Paper Source:NH_Physics_all_2019.pdf
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Exam Specification Info
This question is part of the UK A-Level Physics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectPhysics
Official MarksVariable (2–6 marks)