WileyPLUS US Halliday, Fundamentals of Physics, 10e FUNDAMENTAL PHYSICS (PHYS 22

Question

WileyPLUS US Halliday, Fundamentals of Physics, 10e FUNDAMENTAL PHYSICS (PHYS 225/226/227) Gradebook ORION Practice Assignment signment MESSAGE MY INSTRUCTOR FULL SCREEN PRINTER VERSION BACK NEXT ES Chapter 27, Problem 087 The circuit of the figure shows a capacitor, two ideal batteries, two resistors, and a switch S. Initially S has been open for a long time. If it is then closed for a long time, what is the change in the charge on the capacitor? Assume c 41, uF, &1 2.3 v, & 4.0 R1 0.48 n, and R2 0.54 m. Number Units the tolerance is +/-5% LINK TO TEXT LINK TO SAMPLE PROBLEM By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Question Attempts: 0 of 5 used SAVE FOR LATER SUBMIT ANSWER Copyriaht 2000-2017 by John Wilev 8 Sons, Inc. or related comDanies, All riahts reserved. rivacy Policy 00 ohn Wiley Sons Inc. All Rights Reserved. A Division of John Wiley &Sons; Inca Version 4.22.2.9

Explanation / Answer

Here ,

when the switch is open

charge on the capacitor = C * E2

charge on the capacitor = 41 * 4

charge on the capacitor = 164 uC

Now, when the switch is closed , after a long time

current in the circuit , I = (4 - 2.3)/(0.48 + 0.54)

I = 1.67 A

charge on the capacitor = voltage * C

charge on the capacitor = (4 - 1.67 * 0.54) * 41

charge on the capacitor = 127.1 uC

Now, change in charge on the capacitor = - 164 + 127.1

change in charge on the capacitor = -36.9 uC

the change in charge on the capacitor is -36.9 uC

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