1. happyphysics.com Physics Lecture Resources Prof. Mineesh Gulati Head-Physics Wing Happy Model Hr. Sec. School, Udhampur, J&K Website: happyphysics.com

2. Ch 25 Current, Resistance, and Electromotive Force © 2005 Pearson Education

3. 25.1 Current © 2005 Pearson Education

4. Same number of charge

5. general expression for current vector current density © 2005 Pearson Education

6. 25.2 Resistivity definition of resistivity © 2005 Pearson Education

9. temperature dependence of resistivity © 2005 Pearson Education

10. 25.3 Resistance © 2005 Pearson Education

14. 25.4 Electromotive Force and Circuits © 2005 Pearson Education

19. Potential rises and drops in a circuit

20. 25.5 Energy and Power in Electric Circuits © 2005 Pearson Education

21. 25.6 Theory of Metallic Conduction © 2005 Pearson Education

22. Resistivity Current density

23. Example 25.12 Calculate the mean free time between collisions in copper at room temperature. Calculate the mean free time between collisions in copper at room temperature. ANS: ANS: © 2005 Pearson Education

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