Class t I Help Homework S Begin Date: 221/2018 120100 AM. Due Date: 228/2018 11.

Question

Class t I Help Homework S Begin Date: 221/2018 120100 AM. Due Date: 228/2018 11.900 PM End Date: 3/14/2018 11.5900 PM (13%) Problem 8: Capacitor C1 is initially charged to Vi and capacitor C2 is initially charged to V2 The capacit rs are then connected to each other, positive terminal to positive terminal and negative terminal to negative terminal. If CI = 18 yF with initial voltage of 21 V, and capacitor C2-15 F is charged to , 3 V. what is the final voltage, in volts across C? Grade Summary Deductions Potential 100% 0% Vf Attempts remaining: 15 cotan0 asin acos (0-1. per attempt) detailed view 1 1 | 2 | 3 atan acotanO sinh0 cosh0 Degrees Radians -IVO SubrmitHint I give up Hits: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback.

Explanation / Answer

Applying charge conservation,

Qi = Qf

C1 V1 + C2 V2 = (C1 + C2) V

(18 x 21) + (15 x 13) = (18 + 15) V

V = 17.4 Volt .....Ans

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