- Evaluate the critical factors that determine the magnitude and direction of an induced potential difference, and explain how the resulting magnetic field invariably opposes the original change.
- Explain the mechanism of electromagnetic induction within a transformer, detailing how an alternating current in the primary circuit induces a current in the secondary circuit.
- Understand the capability of transformers to step-up or step-down alternating voltages.
- Explain the strategic use of high-voltage transmission within the national grid to improve overall energy efficiency by minimizing heat loss in transmission lines before stepping the voltage down for localized domestic use.
- Analyze the specific locations and operational purposes of step-up and step-down transformers across the national electricity distribution network.
- Calculate corresponding voltages and currents across transformer coils using the ideal power equation.
