This memory aid covers Memory Aid within Series & Parallel Circuits for GCSE Physics. Revise Series & Parallel Circuits in Electricity for GCSE Physics with 20 exam-style questions and 30 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 12 of 16 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
🧠 Memory Aid
Series vs Parallel rules — "SVSS / PVSS":
Series: Same current, Voltages sum, Sum of resistances.
Parallel: Same voltage, Currents sum, Smaller total resistance.
Christmas lights trick:
Old fairy lights = series (one breaks, all go dark). Modern house lights = parallel (one breaks, rest stay on). Match the circuit type to this real-world example to remember which rule applies.
Parallel resistance check — "Always Less":
Parallel total resistance is ALWAYS less than the smallest resistor in the group. If your answer is bigger — it's wrong. No exceptions.
Practice questions for Series & Parallel Circuits
In a series circuit, what is true about the current at all points?
A student adds an extra lamp to a parallel circuit. Explain how this affects the total current from the supply and the brightness of the original lamps.