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2.1 Current, potential difference and resistance

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Question 29
F

A student plots current against potential difference for a filament lamp. The line curves so that it becomes less steep as the potential difference increases. Why?

[1]
A

The charge flowing through the filament is used up as the lamp glows

B

The filament gets hotter, so the resistance of the filament decreases

C

The filament gets hotter, so the resistance of the filament increases

D

The filament conducts in one direction only once it has become hot

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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