Electromagnetic Induction, AC and Transformers Explorer for A Level Physics
Explore magnetic flux linkage and generator emf, sinusoidal AC and oscilloscope controls, transformer ratios and high-voltage power transmission with live A Level Physics calculations.
Learning guide and suggested activities
What this tool shows
Why rotating-coil flux linkage and induced emf are a quarter-cycle apart
How field strength, turns, area and rotation frequency set generator emf
How rms, peak and peak-to-peak values appear on an oscilloscope
How time-base and y-gain settings turn divisions into frequency and voltage
How transformer turns ratio, efficiency and transmission voltage affect power loss
OCR A relevance
OCR A Module 6.3.2: Electromagnetic induction
Alternating current, transformers and power transmission
Faraday’s law, Lenz’s law and flux linkage
AQA relevance
AQA 7408 sections 3.7.5.3 to 3.7.5.6
Magnetic flux, induction and rotating-coil generators
Alternating currents, oscilloscopes, transformers and transmission losses
Try these tasks
Rotate the coil through one cycle and compare the zeros and extrema of flux linkage and emf.
Use the oscilloscope controls to display exactly two cycles and calculate the signal frequency.
Change an rms voltage into its peak and peak-to-peak values.
Increase transmission voltage by a factor of ten and explain the factor-of-one-hundred fall in I²R loss.