chapter17-web1

chapter17-web1 - Chapter 17 1. 2. 3. 4. 5. 6. 7. Current...

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1 Chapter 17 Current and Resistance 1. Electric current 2. Drift speed 3. Current and voltage measurement 4. Ohm’s law 5. Resistivity 6. Superconductivity 7. Electric energy and power
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2 Electric Current s What is an electric current? s How do I calculate current? s What are the SI units? s What is the direction of current in a circuit? s What is conventional current?
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3 Current and Drift Speed s Current defined in terms of charge carrier and drift speed s Isolated conductor s Conductor with electric field s Drift speed and circuits
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4 Example 1. The battery pack of a pocket calculator has a voltage of 3.0 V and delivers a current of 0.17 mA. In one hour of operation, a) How much charge flows in the circuit? b) How much energy does the battery deliver to the calculator circuit?
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5 Meters in a Circuit s What is an ammeter? s How do I connect it in a circuit? s What is a voltmeter? s How do I connect it in a circuit?
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6 Resistance s What is a resistor? s
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This note was uploaded on 01/16/2012 for the course PHYSICS 105 taught by Professor Shaukatgoderya during the Spring '12 term at Tarleton.

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chapter17-web1 - Chapter 17 1. 2. 3. 4. 5. 6. 7. Current...

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