Exercise 24.28 Part C For the capacitor network shown in (Figure 1), the potenti

Question

Exercise 24.28 Part C For the capacitor network shown in (Figure 1), the potential difference across ab is 53 V Find the charge on the 120 nF capacitor Express your answer with the appropriate units. Submit My Answers Give Up Correct Part D Find the total energy stored in the network. Express your answer with the appropriate units. 1 Value Units Figure 1 of 1 Submit My Answers Give Up Part E Find the energy stored i the 150 nF capacitor. Express your answer with the appropriate units. 150 nF120 nF u Value Units Submit My Answers Give Up Part F

Explanation / Answer

here,

V= 53 V

C1 = 150 nF = 1.5 * 10^-7 F

C2 = 120 nF = 1.2 * 10^-7 F

the equivalent capacitance , C = C1 * C2 /( C1 + C2)

C = 150 * 120 /( 150 + 120) = 66.7 nF

the charge across both , Q = C * V = 3.54 * 10^-6 C

d)

the total energy stored , E = 0.5 * C * V^2

E = 0.5 * 66.7 * 10^-9 * 53^2 J

E = 9.36 * 10^-5 J

e)

the energy across 150 nC , E1= 0.5 * Q^2 /150 nC = 4.18 * 10^-5 J

f)

the energy stored in 120 nC , E2 = E - E1

E2 = 5.18 J

g)

potential difference across 150 nC , V1 = Q/C1 = 23.6 V

h)

the potential difference across 120 nC , V2 = V - V1 = 29.4 V

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