DC Fundamentals

Kirchhoff's Voltage Law (KVL) Interactive Loop Lab

Verify ∑V_loop = 0 around closed DC meshes by measuring exact node potentials and algebraic component drops.

Speed
Explore how two series resistances split a 10V DC supply proportionally. Adjust the variable resistor wiper in the inspector to sweep Vout smoothly!
● CH1: CH1
● CH2: CH2

Engineering Theory & Mathematical Model

∑ V_rises − ∑ V_drops = 0

Gustav Kirchhoff's second law reflects conservation of electrostatic potential energy: moving around any closed circuit loop back to the starting node yields zero net potential change. Here, the +10.00 V battery rise equals the exact sum of V(R1) + V(POT1).

Interactive Lab Procedure

  1. Hover over R1 and POT1 to record ΔV1 and ΔV2, then confirm ΔV1 + ΔV2 = 10.00 V for every potentiometer setting.
  2. Add a third resistor in series using the Resistor tool and verify KVL across all three drops.
  3. Attach Voltmeters across individual elements to display simultaneous loop readings.

Technical FAQ

What is the core governing formula for Kirchhoff's Voltage Law (KVL) Interactive Loop Lab?

∑ V_rises − ∑ V_drops = 0 — Gustav Kirchhoff's second law reflects conservation of electrostatic potential energy: moving around any closed circuit loop back to the starting node yields zero net potential change. Here, the +10.00 V battery rise equals the exact sum of V(R1) + V(POT1).

Can I modify component values and rewire this circuit live?

Yes! The schematic above runs a live MNA SPICE engine. Click any part to adjust parameters, add or delete wires and components, and click Share URL to save your custom topology.

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