A wildlife-tracking tag on a deer sends a radio signal. At a field station, the signal is absorbed by an aerial connected to a suitable circuit. A researcher then retunes the tag so that it sends its radio signal at a higher frequency than before.
Explain what the absorbed radio signal produces in the circuit at the field station, and how this changes after the tag is retuned.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.