Fuel is pumped from a road tanker into an underground tank at a filling station. As the fuel flows, the metal pipe and the tanker become charged. A metal wire is connected between the tanker and the ground before the pumping starts.
Explain why a spark could be dangerous at a filling station.
Explain how connecting the tanker to the ground with a metal wire makes a spark less likely.
40 exam-style questions on AQA GCSE Physics 2.5 Static electricity, covering 2.5.1 Static charge and 2.5.2 Electric fields. Each one has a worked solution and a mark scheme showing where the marks go.