W 3- Capacitors/Dielectrics Begin Date: 9/7/2017 12:00:00 AM - Due Date: 9/12/20

Question

W 3- Capacitors/Dielectrics Begin Date: 9/7/2017 12:00:00 AM - Due Date: 9/12/2017 11:59:00 PM End Date: 12/16/2017 12:00:00 AM (14%) Problem 4: Three capacitors are connected as shown, where C = 0.045 F 2C 5C 3C ©theexpertta.com 33% Part (a) Input an expression for the equivalent capacitance between points a and b, in terms of C. 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? Grade Summary Deductions Potential 0% 100% 7 8 9 Submissions Attempts remaining: Z (5% per attempt) detailed view cos) tan() | sin cotanOasi atan) acotan() acosO sinhO coshtanh)cotanhO END Degrees Radians DEL CLEAR Submit Hint I give up! Hints: 1 % deduction per hint. Hints remaining: 1 Feedback: 1% deduction per feedback.

Explanation / Answer

2C and 3C are in parallel

C1 = 2C + 3C = 5C

C1 and 5C are in series

C(net) = 5*5 / (5 + 5) = 2.5 C

b) C(net) = 2.5*0.045 = 0.09 F

c) energy stored = 0.5CV^2

= 0.5*0.09*10^2= 4.5 J

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