1 / 23

Understanding Circuits: Components, Diagrams, and Power Calculation

Explore the basics of electrical circuits, including components, schematic diagrams, series and parallel circuits, and power calculations. Learn about resistance, voltage, current, and energy in a practical and concise manner.

porath
Download Presentation

Understanding Circuits: Components, Diagrams, and Power Calculation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 16 – 3Warm - Up • 1. Resistance is measured in what unit? • 2. What has more resistance? A 40 W bulb or a 100 W bulb? • 3. What are two things that increase the resistance in a wire?

  2. Chapter 16 - 3 Circuits

  3. Electrical Circuit • Electrical Circuit – set of electrical components • Provide one or more complete paths for the movement of charges

  4. Schematic Diagrams • Schematic Diagrams – graphical representation of a circuit • Uses lines to represent wires • Symbols to represent components

  5. Closed and Open Circuits

  6. Schematic Diagram Symbols

  7. Series and Parallel Circuits • Usually contain 3 components: • 1. Voltage Source – Battery or outlet • 2. Device that uses electricity • 3. Conductors - Wires

  8. Series Circuits • Series circuit - current has only one loop to flow through • Flashlight • Some Christmas lights

  9. Series Circuits • Current in all devises are the same • Resistance can be different so voltage can vary

  10. Open Circuit • When any part of a series circuit is disconnected, no current flows through the circuit

  11. Parallel Circuits • Parallel circuits - contain two or more branches for current to move through • Your house

  12. Voltage across each device is the same • If one bulb has less resistance, more charge moves through that bulb

  13. Household Circuits • Main switch and circuit breaker or fuse box • Parallel circuits branch out • Protect against overheating of the wires

  14. Fuses • Small piece of metal that melts if the current becomes too high • Breaks circuit

  15. Circuit Breaker • Piece of metal that bends when the current in it is so large that it gets hot

  16. Overload – electrical wire carrying an unsafe level of current • Short circuit – wire insulation wears down and wires touch • Alternate path for current

  17. Electrical Energy • Electrical Energy – energy that is associated with charged particles

  18. Electric Power • The rate at which electrical energy is converted to another form of energy - electric power • Measured in kWh

  19. Cost per kWh is assumed to be $0.09/kWh

  20. Other equations • R = V / I • P = I x V • P = I2 x R • P = V2 / R

More Related