Electric charge: Difference between revisions
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'''Electric charge''' is the [[physical property]] of [[matter]] that causes it to experience a [[force]] when placed in an [[electromagnetic field]]. There are two types of electric charge: ''positive'' and ''negative'' (commonly carried by [[proton]]s and [[electron]]s respectively). Like charges repel each other and unlike charges attract each other. An object with an absence of net charge is referred to as [[neutral particle |neutral]]. Early knowledge of how charged substances interact is now called [[classical electrodynamics]], and is still accurate for problems that do not require consideration of [[quantum mechanics|quantum effects]].