(14%) Problem 4: Three capacitors are connected as shown, where C = 0.085 F. 2C

Question

(14%) Problem 4: Three capacitors are connected as shown, where C = 0.085 F. 2C 5C 3C ©theexpertta.c 33% Part (a) Input an expression for the equivalent capacitance between points a and b, in terms of C. Grade Summary Deductions Potential eq 100 0 Submissions Attempts remaining (5% per attempt) detailed view 4 56 BACKSPACE DE CLEAR Submit Hint I give up! Hints: 1 % deduction per hint. Hints remaining: 2 Feedback: 1% deduction per feedback. 33% Part (b) What is the capacitance, in farads? 33% Part (c) If the capacitors are charged with a V= 10 V source, how much energy will the circuit store, in joules?

Explanation / Answer

Net capacitance of 2C and 3C ( in parallel) is Cnet = 2C+3C = 5C

this combination is in series with 5C,then in between a and B the equivalent capacitance is Ceq= (5C*5C)/(5C+5C) = 2.5C

so Ceq = 2.5C

b) Ceq = 2.5*0.085 = 0.2125 C

C) U = 0.5*Ceq*V^2 = 0.5*0.2125*10^2 = 10.625 J

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