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PHYS117B.02 : Lecture 11 and Lecture 12

PHYS117B.02 : Lecture 11 and Lecture 12. EMF, Internal resistance, Power in electric circuit Resistors in series and in parallel. Kirchhoff’s rules. EMF. Electric field and current inside a wire. Open circuit with a source. I = 0 V = e. A source in a complete circuit. I = ? V = ?.

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PHYS117B.02 : Lecture 11 and Lecture 12

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  1. PHYS117B.02 : Lecture 11 and Lecture 12 EMF, Internal resistance, Power in electric circuit Resistors in series and in parallel. Kirchhoff’s rules J.Velkovska,PHYS117B

  2. EMF J.Velkovska,PHYS117B

  3. Electric field and current inside a wire J.Velkovska,PHYS117B

  4. Open circuit with a source • I = 0 • V = e J.Velkovska,PHYS117B

  5. A source in a complete circuit • I = ? • V = ? J.Velkovska,PHYS117B

  6. A source with a short circuit • I = ? • V = ? J.Velkovska,PHYS117B

  7. Potential graph in a circuit J.Velkovska,PHYS117B

  8. Power in Electric circuit J.Velkovska,PHYS117B

  9. Resistors in series • Same current goes through R1 , R2 ,R3 J.Velkovska,PHYS117B

  10. Resistors in parallel • Same potential difference on all resistors J.Velkovska,PHYS117B

  11. Combinations of 3 resistors • Req =? J.Velkovska,PHYS117B

  12. Example of a complex circuit which can be reduced using equivalent resistance Done on the blackboard J.Velkovska,PHYS117B

  13. Kirchhoff’s rules J.Velkovska,PHYS117B

  14. Sign conventions J.Velkovska,PHYS117B

  15. Single loop circuit: Example 26.3 J.Velkovska,PHYS117B

  16. More complex example 26.4 J.Velkovska,PHYS117B

  17. Bridge circuit ( ex 26.6 – can’t be reduced to Req J.Velkovska,PHYS117B

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