Experiment 10: Ohm's Law and Resistance - Theory & Concepts - Circuit Ohms Law

A theory-first lesson on electric current, voltage, resistance, resistivity, Ohm's law, power, temperature effects, I-V characteristics, measurements, 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 voltage12 V

1–48

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

Resistance R16 Ω

1–50

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

Resistance R24 Ω

1–50

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

Governing Formulas

Ohm's Law

I = \frac{V}{R}

Equivalent Resistance (series)

R_{eq} = R_1 + R_2

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.

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