A radio station broadcasts to a radio in a car.
Explain how the transmitter produces a current in the aerial of the car radio.
A student says:
'The frequency of the current in the car radio's aerial is higher when the car is closer to the transmitter.'
Explain why the student is wrong.
Station A broadcasts radio waves with a wavelength of 3.0 m.
Station B broadcasts radio waves with a wavelength of 1500 m.
Explain which station has the higher frequency of oscillations in its transmitter circuit, and by how many times it is higher.
104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.