A high-precision electroplating bath uses a steady current of 2.8 A to deposit silver onto a piece of jewellery.
Calculate the charge that flows through the bath in 45 minutes45\text{ minutes}45 minutes.
Use the equation:
charge flow=current×time \text{charge flow} = \text{current} \times \text{time} charge flow=current×time32 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.