A component has a constant potential difference of 6.0 V across it.
The current is 0.20 A for the first 30 s. The current then increases and remains constant for 20 s.
The total energy transferred during the 50 s is 96 J.
What is the current during the final 20 s?
0.50 A0.50\ \mathrm{A}0.50 A
0.32 A0.32\ \mathrm{A}0.32 A
0.60 A0.60\ \mathrm{A}0.60 A
0.80 A0.80\ \mathrm{A}0.80 A
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.