Question

Prob. 2. The figure shows a network of three capacitors, C1 = 3.0 uF, C2 = 4.0uF, and C3 = 8.0uF, connected to a constant applied potential Vac across terminals a and C. The capacitors in the network are fully charged, and the charge on C2 is 60.0uc. C2 C [a] What is the charge (in units of uC) on capacitor Cz? (Example: If your answer is 75.0°C, enter your answer as 75.0 in the answer box.)

Answer 1

G Prot G tib G We know that is parallel voltage is ta i's Janne Ug = Vez Se => Q3 = 9 Q Es Qiz 8 MF Y eF too 604) Q = 120 mc = 916ouc) As Proba q=isme .C. %=-940 L=3cm=0.03 m + Alle 9, Electric potential at point .. due to q, & 2 V= kg + kq I + (1+92) 11 I E194109 (15-2)** = 334 0.03 = 39 +16 volt U= 3.94106 }

2=5uc the electric potential Energy of 93 ,in the presence of q A la Uz - 093 where = 3.97106 volt 93=shc U3 =3.9916)(stioJ U₂ = 1g.sss d Total potential Essergy of this system U = Uit Us + I3 U1=0 bring to change q, foom infinity bring to charge of in Ų = V=K9,92< L the presence 9, U2 = (+18) (s) (-2) +10l2 I =-9I 0.03) Uz = - g & Uz=1gas I By So put the g +19.5)J values Utotal total = Uit U2+U₂ = Utata = = 10.5 J total gravitational potential Energy of the System
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