Title: 2ND PERIOD
Course: 2024 Physics 3

Unit 2 revisits the behavior of charged particles, discussed in Unit 1, to deepen students’ understanding of the law of conservation of energy and how it’s applied to electric circuits. This unit will ask students to do more than calculate for the current, resistance, and voltage in a simple circuit; it will challenge them to draw connections between the interactions of systems and the changes that result from those interactions. For example, students will need to be able to articulate the impact of a light bulb being removed on a circuit consisting of several light bulbs. They will also need to design an experiment to test if a light bulb is ohmic or justify how changing the spacing of a capacitor will affect its capacitance. Using models and representations to analyze physical situations, as well as using mathematical relationships to justify claims, are critically important science practices in this unit. Unit 2 will also compel students to discover and understand the relationship between the conservation of total energy and the conservation of total electric charge in circuits.

Topics 2.1 Resistivity and Resistance. 2.2 Kirchhoff’s Loop Rule

Session (September 16 – 20) | Before | During | After
Session 1 | Read about capacitors and capacitance https://youtu.be/HsLLq6Rm5tU?si=YbnTHOf70g_s5SWN | Explain capacitors and capacitance. Individual activity: Explore the effect of changing capacitor spacing. | Solve WebAssign on Capacitors https://www.webassign.net/
Session 2 | Review notes on capacitors | Group activity: Analyze circuits with capacitors. | Complete worksheet on capacitors
Session 3 | Watch a video on energy conservation in circuits | Explain energy conservation in circuits. Individual activity: Calculate energy changes in circuits. | Solve WebAssign on Energy Conservation https://www.webassign.net/
Session 4 | Review notes on energy conservation in circuits | Group activity: Discuss the relationship between energy and charge conservation in circuits. |