University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 25, Problem 25.74P
DATA An external resistor R is connected between the terminals of a battery. The value of R varies. For each R value, the current I in the circuit and the terminal voltage Vab of the battery are measured. The results are plotted in Fig. F25.74, a graph of Vab versus I that shows the best straight-line fit to the data, (a) Use the graph in Fig. P25.74 to calculate the battery’s emf and internal resistance, (b) For what value of R is Vab equal to 80.0% of the battery emf?
Figure P25.74
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25.33
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the emf source, E=3.2 V, of the circuit shown in the figure has negligible internal resistance. the resistors have resistances R1=3 ohm and R2=4.2 ohm. the capacitor has a capacitance C= 4.5uF.
A) determine the time constant t , in units of microseconds for charging the capacitor.
B) what is the charge Q on the capacitor in units of microcoulomb?
Chapter 25 Solutions
University Physics (14th Edition)
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