20,345
edits
Changes
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..."
==Key Stage 3==
===Meaning===
[[File:Speaker.png|right|300px|thumb|Text]]
A [[speaker]] is an electrical device that [[vibration|vibrates]] to produce a [[sound]].
===About Speakers===
: [[Speaker]]s use an [[electromagnet]] and a [[Permanent Magnet|permanent magnet]] to [[vibration|vibrate]] a paper cone.
: When the [[current]] changes direction the paper cone moves. An [[Alternating Current|alternating current]] causes the cone in the [[speaker]] to vibrate]].
===Meaning===
[[File:Speaker.png|right|300px|thumb|Text]]
A [[speaker]] is an electrical device that [[vibration|vibrates]] to produce a [[sound]].
===About Speakers===
: [[Speaker]]s use an [[electromagnet]] and a [[Permanent Magnet|permanent magnet]] to [[vibration|vibrate]] a paper cone.
: When the [[current]] changes direction the paper cone moves. An [[Alternating Current|alternating current]] causes the cone in the [[speaker]] to vibrate]].