Electricity
From Wikimedia Commons, the free media repository
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 Electric wires in Norway |
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 Electric wires in Finland |
 Substation in United States |
 Simple Direct Current Dynamo |
 Simple Alternating Current Dynamo |
 Direct Connected Dynamo and Engine |
 A Typical Commutator |
 An electrical toggle switch |
 Equal charges' lines of force. |
 Diferent charges' lines of force. |
 High voltage lines. |
