Follow the Copper, Not the Drawing

You'll learnhow to read a circuit off its wiring: which resistors really team up, and how the volts and amps get shared.

One battery and four resistors, two of them side by side. Which resistors really team up, and how does 12 volts get shared around the loop? Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · FOLLOW THE COPPER · TWO ROADS · RECIPROCALS · v2

four runs of wire · an extra road makes the crossing easier

Before you start

What you're looking at

A 12 volt battery and four resistors in one loop. The wire is painted in four colours, one for each unbroken run.

The question

Which resistors really work side by side, and how do the volts get shared?

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