Difference between revisions of "Speaker"
(Created page with "==Key Stage 3== ===Meaning=== right|300px|thumb|Text A speaker is an electrical device that vibrates to produce a sound. ===About S...") |
(No difference)
|
Revision as of 16:56, 20 October 2018
Key Stage 3
Meaning
A speaker is an electrical device that vibrates to produce a sound.
About Speakers
- Speakers use an electromagnet and a permanent magnet to vibrate a paper cone.
- When the current changes direction the paper cone moves. An alternating current causes the cone in the speaker to vibrate]].