PHY103NPL2W2 - of electron mobility.) 3)What does it mean...

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P2.W2 – DC Circuits Main concepts:  conductivity, current, resistance, Ohm's law Serway Text: Ch. 25, 27, 28 Concepts 1) If you were to plot the voltage vs. the current for a given circuit, what would you expect the slope of the line to be? If now the resistance of the circuit were a function of temperature would you still expect to see a straight line when plotting V vs. I, if the temperature was allowed to vary?  2) What is a conductor?  How is the conductivity related to resistance? How does conductivity of a regular conductor (like a copper wire) change with temperature? Why? (Hint: explain in terms
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Unformatted text preview: of electron mobility.) 3)What does it mean physically for something to have resistance? What does it mean for a battery to have internal resistance? How can the internal resistance r be determined from measurement of the voltage V across the terminals of a battery and the current I through an external resistor R, where is the EMF of the battery? Please explain using using sentences, diagrams, and equations. Make sure you consider plotting the data as in Question 1....
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