A lamp carries a constant current of 0.40 A. A student records for 5.0 min, but the lamp is switched off for 45 s during this time.
What charge passes through the lamp during the recording?
102 C102\ \mathrm{C}102 C
18 C18\ \mathrm{C}18 C
120 C120\ \mathrm{C}120 C
138 C138\ \mathrm{C}138 C
94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.