Live measurements
- Equivalent resistance
- 12.0 Ω
- Supply current
- 1.00 A
- Voltage across R₁
- 6.00 V
- Voltage across R₂
- 6.00 V
- Total power
- 12.0 W
PhysicsA-Level8 minBeta
Circuit Builder Lab
Switch between series, parallel and potential-divider circuits while current, voltage, resistance and power recalculate instantly.
Model presets
Reviewed starting statesCurriculum map
- OCR A-Level Physics
Charge, current and electrical circuits → Kirchhoff's laws, series and parallel circuits - AQA GCSE Physics
Electricity → Series, parallel and mains electricity
Model boundaries
- The power supply and wires are ideal with negligible internal resistance.
- Both components obey Ohm's law and their resistance is constant.
- Measurements represent steady-state direct current.
StudyVector-authored ideal DC circuit model using Ohm's law and Kirchhoff relationships; mapped to the reviewed curriculum topics shown below.
Accessible text description
A conventional circuit diagram shows a labelled DC supply and two resistors in the selected series, parallel or potential-divider arrangement. Current arrows indicate direction and labels report the current and potential difference for each component. An optional power rail compares component power numerically and by bar length.