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Resistivity increases approximately linearly - PowerPoint PPT Presentation

Chapter 17

Chapter 17. Current and Resistance. Electric Current. Whenever electric charges of like signs move, an electric current is said to exist The current is the rate at which the charge flows through this surface Look at the charges flowing perpendicularly to a surface of area A

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Chapter 17

Chapter 17. Current and Resistance. Electric Current. The current is the rate at which the charge flows through a surface . Look at the charges flowing perpendicularly through a surface of area A: The SI unit of current is Ampere (A) 1 A = 1 C/s. Sample Problem.

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Lecture 7

Lecture 7. Electric Current Circuits Resistance and Ohms law Temperature variation Electrical energy. Resistance. In a conductor, the voltage applied across the ends of the conductor is proportional to the current through the conductor

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Resistivity increases approximately linearly - PowerPoint PPT Presentation

Chapter 17

Chapter 17

Lecture 7