In each case below, three capacitors are connected in parallel across a 12 V bat

Question

In each case below, three capacitors are connected in parallel across a 12 V battery. Part (a) uses capacitance values that can be set with the animation sliders, and you can use the animation to verify your calculation. Part (b) uses capacitance values outside the animation range. In each case, calculate C_eq and C_eq. (a) C_1 = 3 pF, C_2 = 7 pF, and C_3 = 3 pF. C_eq = times 10^-12 F C_eq = times 10^-12 C (b) C_1 = 16 pF, C_2 = 15 pF, and C_3 = 15 pF. C_eq = times 10^-12 F C_eq = times 10^-12 C

Explanation / Answer

V = 12

(a) C1= 3 pF , C2 = 7 pF,C3 = 3 pF

in parallel combination

C = C1 +C2 +C3

C = 3+ 7+3= 13 pF

Q = VC

Q = 12*13 =156 pF

(b) C1 = 16 pF, C2 = 15 pF, C3 = 15 pF

C = 16+15+15 = 46 pF

Q = VC

Q = 46*12 = 552 pF

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