Need help with C, D and E. Also F) Afterward, what is the potential difference a

Question

Need help with C, D and E.

Also F) Afterward, what is the potential difference across C3 capacitor?

G Google / E MasteringPhysics: Course G Initially, the switch in the f R Facebook C D https://session.masteringphysics.com/myct/courseHome?start=1 Signed in as Mark SzkolnickiHelp Sign Out MasteringPhysics: Homework 4 - Google Chrome https://session.masteringphysics.com/myct/itemView?offset-next8assignmentProblemID-59361359 PHY122 Physics for the Life Sciences Il - Spring 2016 Homework4 Problem 23.69 Signed in as Mark Szkolnicki Hel Close College Physics: A Strategic Approach, 3e KnightJones/Field Resources previous 17 of 21 next» Part C Test Your Knowledge Problem 23.69 Afterward, what is the charge on C2 capacitor? Express your answer using two significant figures. Choose a chapter and work through groups of questions to check your understanding Initially, the switch in the figure is in position A and capacitors C2 and Cs are uncharged. Then the switch is flipped to position B. (Figure 1) View AlI Announcements odules powered by amplifireTM Course Materials Frida Saturda Submit My Answers Give Up Get documents and other files posted by your instructor Incorrect, Try Again, 6 attempts remaining 12 13 Part D Learn More Afterward, what is the potential difference acoss capacitor? Express your answer using two significant figures. 19 20 Figure 1 Y of 1 Tutoring Services Switch 26 27 Submit My Answers Give Up 30 F Part E 100 V C 15 F 4 Afterward, what is the charge on C3 capacitor? Express your answer using two significant figures. 30 F 12 6:01 PM 2/23/2016

Explanation / Answer

Charge stored in C1,
Q1 = C1*V1
Q1 = 15 * 100 uC
Q1 = 1500 uC

Now Switch is Flipped to position B,
C23 = (c2*c3)/(c2 + c3)
C23 = (30*30)/(30+30) uF
C23 = 15 uF

Q1/C1 = Q23/C23
Q1/15 = Q23/15
Q1 = Q23

Q1 + Q23 = 1500 uC
Q1 = 750 uC
Q23 = 750 uC

As the Capacitor 2 & 3 are in series, They will have same charge,

Charge on Capacitor 2 = Charge on Capacitor 3 = 750 uC

Potential across Capacitor 3 = Potential across Capacitor 3 = 750/30
Potential across Capacitor 3 = Potential across Capacitor 3 = 25 V

This answers all your questions !!

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.