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Electrical Circuits - PowerPoint PPT Presentation


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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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Presentation Transcript
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
Common Electric Parts
  • Battery/Power Source
  • Bulb
common symbols cont d

V

A

Common symbols (cont’d)
  • Switch
  • Push-button Switch
  • Resistor
  • Voltmeter
  • Ammeter
circuits1
Circuits

Power Supply

- +

A

v

Ammeter

Resistor

Voltmeter

types of circuits
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

series circuits
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
parallel circuits
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
slide10

A

A

Example

Series or Parallel?

2.

1.

PARALLEL

SERIES

3.

4.

SERIES

PARALLEL

adding an ammeter into a circuit
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

connecting an ammeter
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

adding a voltmeter to a circuit
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

connecting a voltmeter
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

key points
KEY POINTS
  • Voltmeter – always placed outside of circuit attached in parallel
  • Ammeter – is always placed inside circuit attached in series
setting up a circuit
Setting up a Circuit
  • PARV acronym
  • P-ower
  • A-mmeter
  • R-esistor
  • V-olt Meter