01
Theory and background
What is rc lab?
An RC circuit contains a resistor and capacitor. When connected to a source, the capacitor charges gradually; when discharged, its voltage falls exponentially.
PhysicsInteractive simulatorNo install
RCLab
Explore how capacitors charge and discharge through resistors. Adjust circuit values and watch voltage change over time.
Circuit modelResistance, capacitance, voltage
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.
Time constanttau = R C
Frequently asked questions
RC Lab FAQ
01
What is an RC circuit?
An RC circuit combines a resistor and capacitor, producing time-dependent voltage changes.
02
What is the time constant?
The time constant tau = R C sets how quickly the capacitor charges or discharges.
03
Why is the curve exponential?
The charging or discharging rate depends on the remaining voltage difference, creating exponential behavior.
04
What happens if capacitance increases?
Increasing capacitance increases the time constant, so voltage changes more slowly.