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Physics For Engineers Lab2D

Experiment 11: Resistors in Series and Parallel - Theory & Concepts - Circuit Ohms Law

A theory-first lesson on circuit topology, Kirchhoff's laws, equivalent resistance, voltage division, current division, power, mixed networks, simulation, and laboratory verification.

Open the complete lesson
Interactive engineering simulation

Ohm's Law Circuit Simulator

Switch between series and parallel resistance. Current, power, electron-flow speed, and bulb brightness update immediately.

Supply voltage
12 V
V
148

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Resistance R1
6 Ω
Ω
150

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Resistance R2
4 Ω
Ω
150

Drag for exploration or enter an exact value. Press Enter to apply; Escape restores the current value.

Governing Formulas
Ohm's LawI=VRI = \frac{V}{R}
Equivalent Resistance (series)Req=R1+R2R_{eq} = R_1 + R_2
Circuit with battery resistors and bulbR1R2
Equivalent R
10.00 Ω
Current
1.20 A
Power
14.40 W
Model scope and verification

Use the displayed units and idealizations, then verify the governing balance or compatibility equation before interpreting the result.