Christmas Lights vs House Lights
⚡ Christmas Lights vs House Lights
What it looks like: All components connected in a single loop — current has only ONE path to follow.
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🧠 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.
Now try it yourself
Quiz · Question 1 of 20
In a series circuit, what is true about the current at all points?
Tap an answer to check it
This topic in real past papers
Every real exam question we've found on series & parallel circuits, with a full worked answer.