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# Series And Parallel Circuits

## by guestae982 on Mar 20, 2009

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## Series And Parallel CircuitsPresentation Transcript

• circuit symbols
• symbols review
• an electrical circuit
• A current will only flow if there is:
• a supply of electrical energy ( an e.m.f.) &
• a complete circuit.
• a series circuit A series circuit is one where the current has “no choice” as to which “path” to follow. There are no junctions in a series circuit.
• switches in a series circuit A single switch will control all the lamps in a series circuit.
• adding lamps to a series circuit Adding extra lamps to a series circuit reduces their brightness.
• a parallel circuit A parallel circuit is one where the current has a “choice” as to “which path” to follow.
• switches in a parallel circuit A switch in a parallel circuit can control a single lamp.
• switches in a parallel circuit A switch in a parallel circuit can control all the lamps.
• adding lamps to a parallel circuit Adding extra lamps to a parallel circuit does not reduce their brightness.
• series circuits
• A series circuit is one where the current has “no choice” as to which “path” to follow.
• There are no junctions in a series circuit.
• A single switch will control all the lamps in a series circuit.
• Adding extra lamps to a series circuit reduces their brightness.
• parallel circuits
• A parallel circuit is one where the current has a “choice” as to “which path” to follow.
• A switch in a parallel circuit can control a single lamp.
• A switch in a parallel circuit can control all the lamps.
• Adding extra lamps to a parallel circuit does not reduce their brightness.