A telemetry sensor in an oceanographic research buoy is programmed to draw a continuous current of 15 mA during an active data-transmission cycle.
Calculate the total quantity of charge that flows through the sensor's telemetry circuit during a transmission cycle lasting 4.0 minutes4.0\text{ minutes}4.0 minutes.
State the unit of charge with your answer.
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.