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Three capacitors C1 = 2 uF, C2 = 4 uF, and C3 = 4 uF are connected in a circuit: C2 and C3 are in series with each other, and that series combination is connected in parallel with C1; the whole combination is connected across a 12 V battery. Find the charge stored on C1.
- 6 uC
- 12 uC
- 18 uC
- 24 uC
Correct answer: 24 uC
Solution
When C1 is directly connected across the 12 V supply, Q1 = C1 * V = 2 uF * 12 V = 24 uC.
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