“Circuit Electron Flow” simulates the flow of electrons through a wire caused by electric fields created by surface charges.  Four different situations are presented, in order of increasing complexity:

1. Electron flow through a straight wire
2. Electron flow through a wire with a 90 degree bend
3. Electron flow through a simple circuit
4. Electron flow through a “snaky” circuit

In the simulation and the corresponding worksheet (included below), students are encouraged to explore how the accumulation of electrons on the surface of a wire affects the surface charge, which in turn alters the electric fields throughout the circuit.  The “Circuit Electron Flow” simulation was inspired by Professor Bruce Sherwood’s work to create accurate 3D models of the surface charge in various circuits.  His 3D models are available on the Glowscript website.

The following worksheet is designed to accompany the simulation: