During a violent atmospheric discharge (a lightning strike), a net quantity of electric charge, QQQ, transfers from a storm cloud to the ground over a time interval, Δt\Delta tΔt, establishing an average electrical current, III.
State the equation that expresses Q Q\,Q in terms of I I\,I and Δt\Delta tΔt.
32 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current. Each one has a worked solution and a mark scheme showing where the marks go.