An electrostatic dust precipitator in an industrial smokestack removes particulates by charging them and collecting them on plates. During a continuous 12.5-hour12.5\text{-hour}12.5-hour operation cycle, a total charge of 54,000 coulombs54,000\text{ coulombs}54,000 coulombs is transferred by the moving ions to the collecting plates.
Calculate the mean current associated with this charge transfer.
39 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.