Circuit Simulator
Explore Ohm's Law with interactive series and parallel resistor circuits. Adjust voltage and resistance to see current, voltage drops, and power update live.
Circuit Configuration
Measurements
| V source | -- |
| R total | -- |
| I total | -- |
| V across R₁ | -- |
| V across R₂ | -- |
| V across R₃ | -- |
| Power | -- |
The Math Behind It
Ohm's Law
- Voltage = Current × Resistance: V = I R
- Current: I = V / R
- Resistance: R = V / I
Series Circuits
- Total resistance: R = R₁ + R₂ + ...
- Same current flows through all resistors
- Voltage divides across each resistor proportionally
Power
- P = V I = I²R = V²/R
- Measured in Watts (W)
Parallel Circuits
- Total resistance: 1/R = 1/R₁ + 1/R₂ + ...
- Same voltage across all branches
- Current divides among branches
- Total resistance is always less than the smallest resistor
Kirchhoff's Voltage Law
- The sum of all voltage drops around a closed loop equals zero
- ΣV = 0 around any loop
- Vsource = VR1 + VR2 + ... (series)
You're crushing it!