MasteringPhysics Week8: Electric current-Google Chrome Secure https:// Google Ch

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MasteringPhysics Week8: Electric current-Google Chrome Secure https:// Google Chrome item View?oftse nexta assignment ProblemlD 73039190 Physics 210 17 Current Item 7 Item 7 Part A Terminals A and Bin the figure are connected lo a 12 V Find the energy stored in each capacitor hattery(Figure 1) Consider Ch 14 AuF, O2 4 HE, and Ca 19 Express your answers using two significant figures separated by commas. ui, U2, 1.74 10 .2.9.10 T.6.55 10 s Sub My Answers Give up Incorrect; Try Again: 3 attempts remaining Prowde eedback at B Continue

Explanation / Answer

Solving C2 and C3 in series

1/C23 = 1/C2 + 1/C3

C23 = 5.825 uF

Charge in branch containing C2 and C3 = Q = C23*V = 5.825*12 = 69.9 uC which will be same across C2 and C3

Charge in C1 = Q1 = 14*12 = 168 uC

Energy in a capacitor is given by

E = 0.5Q^2/C

U1= 1.008 mJ

U2 = 0.29 mJ

U3 = 0.1286 mJ

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