1. One resistor
Current = voltage ÷ resistance.
12 V ÷ 30 Ω = 400 mA
Nine open. The rest is coming.
Resistor puzzles
A lesson shows the arithmetic. Then you set one resistor so the meter hits the target. Four choices. One of them is right.
2. In a row
Add the ohms, then divide. The blank takes its share of the voltage.
10 Ω + 20 Ω = 30 Ω
3. The wire splits
Each branch gets the full battery. The currents add. A pair combines first.
600 mA + 400 mA = 1000 mA
Coming soon
The other 91
The same three ideas, more puzzles. Not on this page yet.
A price
Not for sale yet. No buy button until a price is on the Products screen.
A record
Nothing saved. You play the nine, then you can play them again.
OpenStax, Physics, chapter 19. CC BY 4.0.