Speakers & Headphones (Edexcel GCSE Physics): Flashcards
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Practise the cards
13 cards from this deck
What do loudspeakers convert?
What do loudspeakers convert?
Electrical signals into sound
What are loudspeakers the reverse of?
What are loudspeakers the reverse of?
Microphones
What flows into the speaker coil?
What flows into the speaker coil?
Electrical current
What provides the magnetic field in a speaker?
What provides the magnetic field in a speaker?
Permanent magnet
What does the moving coil push in a speaker?
What does the moving coil push in a speaker?
Cone or diaphragm
How does a speaker create sound?
How does a speaker create sound?
Cone creates pressure variations in air
How do headphones differ from loudspeakers?
How do headphones differ from loudspeakers?
Similar function but smaller scale
Which speaker component does current flow through?
Which speaker component does current flow through?
Coil of wire
Which speaker component creates sound waves?
Which speaker component creates sound waves?
Diaphragm
What is the mechanism in dynamic headphones?
What is the mechanism in dynamic headphones?
Moving coil and magnet
What is the mechanism in electrostatic headphones?
What is the mechanism in electrostatic headphones?
Electrically charged plates
How do microphones work compared to speakers?
How do microphones work compared to speakers?
Reverse process
What do microphones generate?
What do microphones generate?
Electrical signal through electromagnetic induction