01
Theory and background
What is ohm's law?
Ohm's Law describes the relationship between voltage, current, and resistance in an ideal conductor. If resistance stays constant, current changes directly with voltage.
PhysicsInteractive simulatorNo install
Ohm'sLaw
Build intuition for circuits by changing voltage and resistance, then observing how current responds through virtual instruments.
Circuit modelVoltage, current, resistance
Experiment guide
Use this simulator like a compact physics lab
Start with the concept, open the lab, then compare the observed motion with the key relationship. The sections below keep the theory, workflow, and common questions easy to scan.
SubjectPhysics
ModeInteractive
ModelCircuit model
AccessBrowser
02
How the simulation works
Interactive experiment flow
Launch the lab, adjust the available controls, and observe the result immediately. Use the simulation to connect the equation with what changes on screen.
Circuit relationshipV = I R
Frequently asked questions
Ohm's Law FAQ
01
What does Ohm's Law state?
Ohm's Law states that voltage equals current multiplied by resistance: V = I R.
02
What happens if resistance increases?
For the same voltage, increasing resistance reduces current.
03
Is Ohm's Law always valid?
It works well for ohmic materials with constant resistance, but not all devices have linear V-I behavior.
04
Why use virtual instruments?
Virtual meters make it easier to observe current and voltage changes safely while experimenting.