Ohm's Law Bench (3D) Simulation

This simulation is the school Ohm’s-law experiment rebuilt as a 3D bench: a cell, a switch, a rheostat, an ammeter in series and a resistor with a voltmeter across it only. As Pathik Sir suggested, you work it on the circuit itself — tap the switch, the rheostat's − and +, and the resistor's value — rather than through sliders alone.

Record a reading at each rheostat setting, or run the six-setting experiment, and the readings fill a table and an I–V graph. They lie on one straight line through the origin; V/I equals the resistance at every setting, and the fitted slope ΔI/ΔV is 1/R. The meters are ideal and the resistor stays at 25 °C, so its resistance does not change.