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<math>E \approx 39000 \times 10^4J</math>
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==Key Stage 5==
===Meaning===
'''Electrical charge''' is a [[Conservation of Charge|conserved]] quantity and a [[property]] of [[Subatomic Particle|particle]]s which allow them to interact via the [[Electromagnetic Interaction|electromagnetic interaction]].
===About Electrical Charge at the Particle Level===
: '''Charged''' [[Subatomic Particle|particles]] may exchange virtual [[photon]]s causing a change in their [[momentum]]. This results in an apparent [[force]] of [[attract]]ion or [[repel|repulsion]] between '''charged''' [[Subatomic Particle|particles]].