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10.2 Resistance

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Question 23

The current in resistor Y is 0.045 A.

The potential difference across resistor Y is 3.6 V.

Show that the resistance of resistor Y must be about 80 Ω.

Use the equation:

potential difference=current×resistance \text{potential difference} = \text{current} \times \text{resistance} potential difference=current×resistance
[2]
Markscheme

10.2 Resistance Questions

  1. GCSE
  2. /Physics
  3. /10.2 Resistance

59 exam-style questions on Edexcel GCSE Physics 10.2 Resistance, covering 10.2.1 Current in a circuit and conservation at junctions, 10.2.2 Resistance and variable resistors, 10.2.3 Series and parallel resistance, 10.2.4 I–V characteristics of components, and 10.2.5 LDRs and thermistors. Each one has a worked solution and a mark scheme showing where the marks go.

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