Kirchhoff's Loop Rule: Signs Around the Loop Simulation

Kirchhoff's loop rule says that the potential differences around any closed loop add up to zero. This simulation teaches it with voltages alone. Four sealed components sit on a square and its diagonal; only two meters can be read, the other two are covered with tape. A test charge walks three loops while a fence rises and falls with the potential along its path, always closing at the height it started.

Each closed loop gives one equation and peels the tape off one meter: the right triangle gives V_y = V_z, the left triangle V_x = V_z − V_k, and the outer square checks both. Treat each component like a battery: walking with its push counts +V, against it −V, a plain wire nothing. Reverse the walking direction and every sign flips while the answers stay. As Pathik Sir suggested, you can change the known voltages directly on the 3D circuit.