Loudspeakers Work Because of the Motor Effect Flashcards
1
Q
What are a.c electrical signals from an amplifier fed to?
A
A coil of wire in the speaker, which is wrapped around the base of a cone
2
Q
What is the coil surrounded by and why?
A
A permanent magnet
3
Q
Why is the coil surrounded by this?
A
so the a.c signals cause a force on the coil and make it move back and forth
4
Q
What do these movements do?
A
Make the cone vibrate and this creates sound
