Eduqas GCSE Physics · EDUQAS C220P4
8.4 Microphones, speakers, oscillating currents in detection
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on Microphones, speakers, oscillating currents in detection
- Explain how a moving-coil microphone converts sound waves into an electrical signal. (4 marks, Explain)
- A loudspeaker is connected to an audio amplifier and used to play music. Explain how the l… (4 marks, Explain)
- A security system uses a microphone to detect sounds in a building. The microphone produce… (4 marks, Describe and Explain)
- A singer uses a loudspeaker on stage to hear their own voice played back. Explain how the … (4 marks, Explain)
- A doctor uses an ultrasound device that contains a loudspeaker to direct sound waves into … (4 marks, Explain)
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