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Electrical Circuits

Electrical Circuits. Circuits: . A circuit is made up of a power supply , connecting wires & various elements that allow current to leave a power source, travel through the elements & return back to the power source. Common Electric Parts. Battery/Power Source Bulb. V. A.

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Electrical Circuits

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  1. Electrical Circuits

  2. Circuits: • A circuit is made up of a power supply, connecting wires & various elements that allow current to leave a power source, travel through the elements & return back to the power source.

  3. Common Electric Parts • Battery/Power Source • Bulb

  4. V A Common symbols (cont’d) • Switch • Push-button Switch • Resistor • Voltmeter • Ammeter

  5. Circuits Power Supply - + A v Ammeter Resistor Voltmeter

  6. Types of Circuits: Trick to help identify type of circuit: Series: Current has only one option to flow Parallel: Current has more than one option to flow through • There are 2 types of circuits: • 1. Series Circuit • 2. Parallel Circuit SERIES PARALLEL

  7. Series Circuits • Components are connected end to end • Current only follows one path • If one part of the circuit is broken, the entire circuit will stop functioning • Eg: Christmas tree lights

  8. Parallel Circuits • Circuit that contains at least one branch • Current can follow at least 2 different paths • If part of the circuit is defective another part may still be able to operate. • Eg: headlights on a car

  9. A A Example Series or Parallel? 2. 1. PARALLEL SERIES 3. 4. SERIES PARALLEL

  10. Adding an Ammeter into a Circuit • In order to measure the current traveling through a circuit, an ammeter must be inserted into the circuit. • An ammeter is always connected inside the circuit in series. A

  11. Connecting An Ammeter In each diagram, is the ammeter hooked up correctly to these circuits? A) B) C) A A NO A YES YES F) E) D) NO A YES NO A A

  12. Adding a Voltmeter to a Circuit • In order to measure the voltage traveling through a circuit, a voltmeter must be inserted into the circuit. • A voltmeter is always connected outsidethe circuit in parallel. V

  13. Connecting A Voltmeter In each diagram, is the voltmeter hooked up correctly to these circuits? V A) B) C) V V NO YES YES F) E) D) V YES V YES NO V

  14. KEY POINTS • Voltmeter – always placed outside of circuit attached in parallel • Ammeter – is always placed inside circuit attached in series

  15. Setting up a Circuit • PARV acronym • P-ower • A-mmeter • R-esistor • V-olt Meter

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