This is a lesson I used myself to teach the Capacitor Charging and Discharging concept of the Fields Unit - A level Physics, AQA specification.
Learning objective: To investigate and describe how capacitors charge and discharge over time, and use experimental data to determine the time constant and capacitance of a circuit.
By the end of the lesson learners should be able to:
Success criteria:
SC1: Identify the role of each component in a capacitor charging/discharging circuit and how the voltage changes over time.
SC2: Explain how to interpret and plot ln(V) against time to find the time constant of a circuit.
SC3: Calculate capacitance using gradients from discharge graphs and apply the exponential decay equation correctly.
Contains past paper questions that target this topic, some questions require knowledge from prior lessons. The mark scheme is also included to verify answers.
Powerpoint contains 11 slides and 5 past paper questions.
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