A subsea High Voltage Direct Current (HVDC) transmission link is used to transfer electrical energy between two national grids.
On a day of peak wind-power production, the link transfers 1.38 × 1013 J of electrical energy across the channel.
The potential difference maintained across the transmission line is 460 kV460\text{ kV}460 kV.
Calculate the total charge flow through the link during this transfer.
Give your answer to 3 significant figures.
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.