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R Ch 35 Electric Circuits pg 1

R Ch 35 Electric Circuits pg 1. Text RQ pg 559 RQ 3, 5, 7-9, 11-15. R Ch 35 A Battery & a Bulb pg 2. For electrical things to operate there must be a complete path or circuit. R Ch 35 Electrical Circuits pg 3. Closed circuit = an operating circuit

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R Ch 35 Electric Circuits pg 1

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  1. R Ch 35 Electric Circuits pg 1 Text RQ pg 559 RQ 3, 5, 7-9, 11-15

  2. R Ch 35 A Battery & a Bulb pg 2 • For electrical things to operate there must be a complete path or circuit.

  3. R Ch 35 Electrical Circuits pg 3 • Closed circuit = an operating circuit • Open circuit = a circuit which is not operating • There are two kinds of circuits; • 1) series circuits have a single path for the electrons to follow • 2) parallel circuits have multiple paths for the electrons to follow

  4. R Ch 35 Series Circuits pg 4 • Series circuits have a single path for the electrons to follow. • Series circuits are only used in cheap xmas lights because a single break in the circuit kills the whole circuit

  5. R Ch 35 Parallel Circuits pg 5 • Parallel circuits have multiple paths for the electrons to follow, so any one device can be turned off or on and not effect the rest of the circuit

  6. R Ch 35 Schematic Diagrams pg 6 • Schematic Diagrams are the blueprints or picture of the circuit that is drawn before the circuit is built. • Schematic Diagrams have standard symbols for the different parts of the circuit

  7. R Ch 35 Combing Resistors in a Compound Circuit pg 7 • Circuit load = the total resistance of a circuit

  8. R Ch 35 Parallel Circuits & Overloading pg 8 • When more & pathways are added to a parallel circuit the resistance gets lower & lower. (think about adding more hoses to a pipe, more water would come out) • So when too many xmas lights are plugged into a socket the danger exists of overheating the wires and causing a circuit overload or electrical short

  9. R Ch 35 Parallel Circuits & Overloading pg 9 • There are three ways to prevent overloads; • 1) Fuse – one time use device that melts a metal strip sealed in glass, found in cars • 2) circuit breaker – a reusable switch found in most homes • 3)GFI – ground fault interrupt, a reusable switch found near water like bathroom sink

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