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Introduction to Electricity

Introduction to Electricity . Applications of Electrostatics. Electric Charge. Measured in COULOMBS Six million trillion electrons is about - 1 C. Six million trillion protons is about + 1 C. Electric Potential Energy. Electric Potential Energy.

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Introduction to Electricity

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  1. Introduction to Electricity www.assignmentpoint.com

  2. Applications of Electrostatics www.assignmentpoint.com

  3. Electric Charge • Measured in COULOMBS • Six million trillion electrons is about - 1 C. • Six million trillion protons is about + 1 C. www.assignmentpoint.com

  4. Electric Potential Energy www.assignmentpoint.com

  5. Electric Potential Energy • This spring has more SPE when it is compressed www.assignmentpoint.com

  6. Electric Potential Energy • This spring has more SPE when it is compressed • Likewise, these charges will have more potential energy when they are pushed closer www.assignmentpoint.com

  7. Electric Potential Energy • PE equals the amount of work done to move a charge from one place to another. www.assignmentpoint.com

  8. www.assignmentpoint.com

  9. Electric Potential Energy • Which will have the larger electric potential energy? www.assignmentpoint.com

  10. Electric Potential Energy • A – because it requires work to move it away from the negative charge. www.assignmentpoint.com

  11. Electric Potential (volts) • EP = work/charge www.assignmentpoint.com

  12. Electric Potential (volts) • Example:  1000 joules of work is done tomove the charge q from far away to the place indicated. If q = 10 C, what is the electric potentialat the new location? www.assignmentpoint.com

  13. Electric Potential (volts) • Example:  1000 joules of work is done tomove the charge q from far away to the placeindicated. If q = 10 C, what is the electric potentialat the new location? • Voltage = work/charge • V = 1000 J/10C = 100 Volts www.assignmentpoint.com

  14. Electric Potential (volts) • What if the charge in the previous problem were now 100 C instead of 10? What would happen to the EP? www.assignmentpoint.com

  15. Electric Potential (volts) • What if the charge in the previous problem were now 100 C instead of 10? What would happen to the EP? • IT WOULD BE THE SAME!!! • Work would also increase www.assignmentpoint.com

  16. Electric Potential (volts) • Electric potential is associated with LOCATION, not CHARGE www.assignmentpoint.com

  17. Electric Potential vs Potential Energy • Which charge has more electric potential? • Which has more potential energy? www.assignmentpoint.com

  18. Is 5000 Volts Dangerous? www.assignmentpoint.com

  19. Is 5000 Volts Dangerous? • NOPE! • When 1 million electrons are added to a neutral balloon, it has an electric potential of 5000 volts www.assignmentpoint.com

  20. Potential Difference (voltage) • Difference in electric potential between two points. www.assignmentpoint.com

  21. Potential Difference (voltage) • Difference in electric potential between two points. • Potential difference between A and B is 0 A B www.assignmentpoint.com

  22. Potential Difference (voltage) • Difference in electric potential between two points. • Now there is a potential difference A B www.assignmentpoint.com

  23. Potential Difference • Batteries provide potential difference between one end of the circuit and the other www.assignmentpoint.com

  24. Potential Difference • Batteries provide potential difference between one end of the circuit and the other • Charges flow from high to low electric potential www.assignmentpoint.com

  25. Potential Difference (voltage) • Why aren’t birds on power lines shocked? www.assignmentpoint.com

  26. Potential Difference (voltage) • Why aren’t birds on power lines shocked? • The Potential Difference between their feet is zero! (0 voltage) www.assignmentpoint.com

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