Build, wire, and probe live AC/DC & semiconductor circuits on a 2-channel digital oscilloscope, or switch to classical & optical RK4 physics experiments.
Interactive transient simulation of a 47 µF capacitor charging from 10V DC through a 470 Ω resistor and discharging to ground via an SPDT toggle switch.
Verify V = I × R and Joule power P = V × I in real time using a 12V DC source, precision 120 Ω load resistor, inline Ammeter, and parallel Voltmeter.
Simulate AC-to-DC power conversion with four 1N4007 Shockley diodes and a switchable 100 µF reservoir capacitor showing ripple voltage live.
Drive an L = 25 mH, C = 10 µF, R = 8 Ω series tank with a square wave or sine wave to observe natural resonant ringing at f₀ ≈ 318.3 Hz.
Side-by-side comparison of two incandescent lamps in series versus a parallel lamp on a 12V battery, demonstrating voltage division and brightness.
See why LEDs require series current-limiting resistors: compare a safely ballasted 20 mA Green LED against an unprotected Red LED across 9V.
Use a 5V logic micro-current (~0.43 mA) at the Base of a 2N3904 Ebers-Moll NPN transistor to switch a 9V Blue LED collector load between Cutoff and Saturation.
Visualize small-signal voltage amplification and 180° phase inversion on a voltage-divider-biased 2N3904 NPN stage with emitter degeneration.
Balance and unbalance a 4-arm Wheatstone bridge with a variable Rx sensor potentiometer and read millivolt differential voltage across the bridge.
Launch projectiles with RK4 precision, compare vacuum parabolas against quadratic air drag, and test 45° maximum range.
Compare ballistic flight time, apex height, and horizontal range across Lunar (1.62 m/s²), Martian (3.72 m/s²), Earth, and Jovian gravity.
Solve asymmetric trajectories launched from initial height h₀ > 0 and discover why optimal range angle drops below 45°.
Integrate non-analytic aerodynamic drag equations via 4th-order Runge-Kutta and verify KE + PE + E_thermal = Constant.
Drag either pendulum bob on canvas to explore deterministic chaos, sensitive dependence on initial conditions, and exact energy conservation.
Test Galileo isochronism at small angles (sin θ ≈ θ) and measure period lengthening at large release amplitudes up to 170°.
Interactive visual 4-band and 5-band resistor color decoder showing live painted resistor bands, exact resistance, and min/max tolerance range.
Calculate exact and nearest standard E12 current-limiting resistor values and power ratings for single or series LED strings.
Instantaneous solver for electric current, power dissipation in watts, conductance in siemens, and hourly energy consumption.
Compute divided output voltage Vout, decibel attenuation, bleeder current, and Thevenin equivalent output resistance Rth.
Compute exact parallel and series equivalent resistance for two or three resistor combinations simultaneously.
Calculate total capacitance for parallel banks and series strings along with stored coulombs Q and electrostatic energy.
VoltaLab solves Kirchhoffs Current and Voltage Laws at every timestep using real Modified Nodal Analysis (MNA), trapezoidal reactive integration for capacitors and inductors, and Berkeley SPICE3 pnjlim Newton-Raphson iterations for nonlinear Shockley diodes, Zeners, LEDs, and Ebers-Moll BJT transistors.
Yes. 100% of circuit solving, 2-channel oscilloscope rendering, and RK4 physics integration run directly in your browser in both English and Arabic with instant URL circuit sharing.