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This is a lesson I used myself to teach the Alternating Currents and Transformers concept of the Fields Unit - A level Physics, AQA specification.

Learning objective: To explore alternating current (AC), analyse oscilloscope traces, perform RMS and power calculations, and explain the structure, function, and efficiency of transformers.

By the end of the lesson learners should be able to:

Success criteria:

SC1: Interpret oscilloscope traces to determine key features of AC signals, including peak voltage, time period, and frequency.

SC2: Use formulae to calculate RMS current, RMS voltage, and power in resistive AC circuits.

SC3: Describe the structure and function of transformers, including how voltage and current change, and evaluate methods used to improve transformer efficiency.

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 9 slides and 7 past paper questions.