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2.1 Current, potential difference and resistance

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Question 25
F53%

Figure shows the III-V V\,V characteristic of a filament lamp.

Figure: The current in a filament lamp plotted against the potential difference across it

image

a.

Give the current in the lamp when the potential difference across it is 6.0 V. Use Figure.

[1]
b.

Calculate the resistance of the lamp when the potential difference across it is 6.0 V.

[2]
c.

Describe how the shape of the graph in Figure shows that the resistance of the lamp is not constant.

[2]
Markscheme

2.1 Current, potential difference and resistance Questions

  1. GCSE
  2. /Physics
  3. /2.1 Current, potential difference and resistance

82 exam-style questions on AQA GCSE Physics 2.1 Current, potential difference and resistance, covering 2.1.1 Standard circuit diagram symbols, 2.1.2 Electrical charge and current, 2.1.3 Current, resistance and potential difference, and 2.1.4 Resistors. Each one has a worked solution and a mark scheme showing where the marks go.

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