CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or...

16
CIRCUITS Chapter 13.3

Transcript of CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or...

Page 1: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

CIRCUITS

Chapter 13.3

Page 2: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Electric Circuit

• An electrical device connected so that it provides one or more complete paths for the movement of charges.

Page 3: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Schematic Diagram

• A graphic representation of an electric circuit or apparatus, with standard symbols for the electrical devices.

Page 4: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Wire or Conductor

• Wires that connect elements are conductors.

Page 5: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Resistor

• Wires with multiple bends indicating resistance to a straight path.

http://images1.wikia.nocookie.net/en.futurama/images/0/0d/200px-Resistor_symbol_America.svg.png

Page 6: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Bulb or Lamp

• The winding of the filament indirectly indicates that the light bulb is a resistor.

http://cnx.org/content/m14370/latest/Schematic.png

Page 7: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Battery or Direct Current Source

• The difference in line height indicates a voltage between positive and negative terminals of the battery. The taller line represents the positive terminal of the battery.

http://cnx.org/content/m14370/latest/Schematic.png

Page 8: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Switch

• The small circles indicate the two places where the switch makes contact with the wires. Most switches work by breaking only one of the contacts.

Open switch

Closed switch

http://www.highschoolresource.energyaustralia.com.au/studentsElectricCircuits.html

Page 9: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Series Circuits

• A circuit that provides a single path for current to flow.

• As you add resistors, the total resistance (RT) of the circuit increases causing the total current to decrease.

• The current through each resistor is the same no matter what the value of the resistor.

• The voltage of the battery is shared between each resistor.

Page 10: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Series Circuit

• If three lamps are connected in series and one lamp burns out, all the lamps are not going to light. The circuit will be broken.

• As identical lamps are added in series, the light will get dimmer because less current is flowing through the lamps

Page 11: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Parallel Circuit

• A circuit that provides two or more paths for current to flow.

• As you add resistors, the total resistance (RT) in the circuit decreases causing the total current to increase.

Page 12: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Parallel Circuit

• The current through each resistor depends on the value of that particular resistor. The higher the resistance, the lesser the current that passes through the resistor.

Page 13: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Parallel Circuit

• The voltage of the battery is the same across each resistor. Each resistor gets the same voltage value of the battery.

Page 14: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Parallel Circuits

• If three lamps are connected in parallel and one lamp burns out, all the other lamps are still going to light. There is still a circuit intact.

Page 15: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Parallel Circuit

• As identical lamps are added in parallel, the brightness of the lamps will not change. More current is added.

Page 16: CIRCUITS Chapter 13.3. Electric Circuit An electrical device connected so that it provides one or more complete paths for the movement of charges.

Series Circuit Parallel Circuit