Electric Current and Potential Difference: Formal Definitions

Section role: supports the 'Formalizing the Flow: Current and Potential' section while the teacher synthesizes student findings and introduces formal definitions and symbols. Slides: (1) Title — 'Formalizing Electric Flow: Current and Potential Difference'; (2) Circuit Symbols Revisited — bullets: standard symbols for cell, battery (noting short fat negative terminal), and generator, linking back to student diagrams from Section 2; (3) Electric Current (I): The Flow of Charge — bullets: definition as the rate of flow of charge, formula I = Q/Δt, example calculation: 'If 2 C of charge passes a point in 0.4 s, what is the current?'; (4) Potential Difference (V): Work Done on Charge — bullets: definition as work done per coulomb, formula V = W/Q, contrast between Potential Difference (V) and Electromotive Force (EMF); (5) Meter Placement — bullets: explanation for ammeter connection in series, explanation for voltmeter connection in parallel, referencing the 'broken path' logic discussed in Section 2; (6) Summary of Key Terms — bullets: recap of Electric Current, Potential Difference, EMF, and associated units (Ampere, Volt, Coulomb, Joule). Closing slide: 'How do the formulas for I and V connect to our circuit challenge?' — sets up the individual practice in Section 4.

Lara from Teachy