Hone I Student: Chapter 21 Regn Date: 9/30/2017 1200:00 AM- Due Dae 108/2017 115
ID: 1773253 • Letter: H
Question
Hone I Student: Chapter 21 Regn Date: 9/30/2017 1200:00 AM- Due Dae 108/2017 115900 PM End Date: 12/19/2017 1200:00 AM (7%)Problem 13: Two capacitors of capacitance 3C and 5C(where curs) are connected in series with a resistor of resistance R-9.5 Randomized Variables R=9.5 3C 5C C 0.075 F Ctheespertta.com 50% Part (a) How long will it take the amount ofcharge in the circuit to drop by 75% in seconds? Grade Summary 100% a789 cotan asing ac °Degrees Radians deduction per swhack. 50% Part (b) If the circuit was charged by a loo v source how much total charge (inQdd both equators have in them to bep wa? MacBook Air 3 4 5Explanation / Answer
equivalent capacitace = 3*5 / (3 + 5) * 0.075 = 0.140625 F
Q = Qo ( 1 - e^-t/RC)
0.25Q0 = Qo(1 - e^-t / 0.140625*9.5)
t = 0.384 s
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