In a single closed loop the current is 0.40 A. A student says the current must be smaller after the lamp than before it, because the lamp transfers energy. Which statement is correct?
The student is right, because charge is transferred to the lamp as it passes
The student is right, because the lamp has a resistance that reduces the flow
The student is wrong, because the lamp increases the current as it heats up
The student is wrong, because energy is transferred but charge is not used up
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.