作者murphydog (嗎啡)
看板Physics
標題[問題]電容的兩題問題
時間Sun Mar 15 12:58:23 2009
Q1
a●──●╲→→→ ●──┐
╲ C2═
● │
│ │
C1═ C3═
b●─────┴─────┘
In the circuit shown in the figure, C1=3.0μF, C2=5.5μF, C3=1.6μF. and a
voltage Vab=16V is applied across points a and b.After C1 is fully charged
the switch is thrown to the right.
PartA：
What is the final charge on each capacitor?
Express your answers using two significant figures.
PartB：
What is the final potential difference on each capacitor?
Express your answers using two significant figures.
Q2
When two capacitors are connected in parallel and then connected to a
battery,the total stored energy is 7.9 times greater than when they are
connected in series and then connected to the same battery.
What is the ratio of the two capacitances? (Before the battery is connected
in each case, the capacitors are fully discharged.)
Express your answer using two significant figures.
有請高人指教...
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