Electrical Circuits Circuits A circuit is made up
- Slides: 16
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 l Battery/Power Source l Bulb
Common symbols (cont’d) l Switch l Push-button Switch Resistor l Voltmeter l Ammeter l V A
Circuits Power Supply - + A v Ammeter Resistor Voltmeter
Trick to help identify type of circuit: Series: Current has only one option to flow Types of Circuits: Parallel: Current has more than one option to flow through ¡ There are 2 types of circuits: 1. ¡ 2. ¡ SERIES Series Circuit Parallel Circuit PARALLEL
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 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 ¡
Series or Parallel? 1. 2. PARALLEL SERIES 3. 4. A PARALLEL SERIES A
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 In each diagram, is the ammeter hooked up correctly to these circuits? A A A
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 outside the circuit in parallel. V
Connecting A Voltmeter In each diagram, is the voltmeter hooked up correctly to these circuits? V V V
KEY POINTS ¡ Voltmeter – always placed outside of circuit attached in parallel ¡ Ammeter – is always placed inside circuit attached in series
Setting up a Circuit PARV acronym ¡ P-ower ¡ A-mmeter ¡ R-esistor ¡ V-olt Meter ¡
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