—·Physics · GCSE
Charge Goes Round, Energy Gets Used
Why adding a resistor in parallel makes it easier for current to flow — and what actually gets used up in a circuit. Current, potential difference and resistance, with three I–V curves on one pair of axes; series and parallel rules; mains, safety, the grid and static, under lightning striking the Eiffel Tower in 1902; six equations, every one on the DfE's recall list; a series circuit worked end to end. Eight terms to define, a model answer on parallel resistance, and the misconceptions that cost marks.
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