Physics Topic
Circuits and Electricity
Understand how voltage, current, and resistance interact in electric circuits. From Ohm's law to Kirchhoff's laws, circuit analysis powers modern technology.
Learning Path
Electric Circuits Poster
Visual guide to Ohm's law, series vs parallel configurations, voltage, current, resistance, and power with annotated circuit diagrams and worked examples.
View Poster →Circuit Calculator
Calculate voltage, current, resistance, and power with Ohm's law. Build series and parallel resistor networks with step-by-step equivalent resistance calculations.
Open Tool →Circuit Builder Lab
Explore series, parallel, and combination circuits with adjustable resistor values. Verify Ohm's law and Kirchhoff's laws with animated current flow and real-time calculations.
Open Lab →Key Formulas
- Ohm's Law: V = IR
- Power: P = IV = I²R = V²/R
- Series: R_total = R1 + R2 + ...
- Parallel: 1/R_total = 1/R1 + 1/R2 + ...
- Series: same current, voltage splits
- Parallel: same voltage, current splits
More Resources
Ohm's Law Circuits Poster
Annotated reference card for Ohm's law with the voltage-current-resistance triangle, power formulas, and a worked example for mixed circuit networks.
View Poster →Series and Parallel Circuits Poster
Side-by-side comparison of series and parallel circuits showing how current and voltage behave differently in each configuration with labeled diagrams.
View Poster →RC/RL Transients Lab
Explore capacitor charging and discharging with oscilloscope-style plots. Measure time constants, verify exponential models, and extract experimental values.
Open Lab →Electricity & Circuits Cheat Sheet
Ohm's law, series and parallel rules, power formulas, and Kirchhoff's laws on one printable page.
View Cheat Sheet →