Loudspeakers & Headphones (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What do loudspeakers convert?
What do loudspeakers convert?
Electrical signals into sound
How do loudspeakers relate to microphones?
How do loudspeakers relate to microphones?
They work in reverse of microphones
Where does the electrical current flow in a loudspeaker?
Where does the electrical current flow in a loudspeaker?
Into a coil of wire
What causes the coil to move in a loudspeaker?
What causes the coil to move in a loudspeaker?
Interaction between magnetic fields
What creates the sound we hear from loudspeakers?
What creates the sound we hear from loudspeakers?
Pressure variations in the air
How do headphones compare to loudspeakers?
How do headphones compare to loudspeakers?
They function similarly but smaller scale
What is the function of the coil of wire?
What is the function of the coil of wire?
Where the electric current flows
What does the magnet provide in loudspeakers?
What does the magnet provide in loudspeakers?
A magnetic field to interact with coil
What is the diaphragm's role in headphones?
What is the diaphragm's role in headphones?
Moves to create sound waves
What do diaphragm vibrations create in headphones?
What do diaphragm vibrations create in headphones?
Pressure waves in the air
What principle do dynamic headphones use?
What principle do dynamic headphones use?
Moving coil and magnet
What do electrostatic headphones use?
What do electrostatic headphones use?
Electrically charged plates & diaphragm