[領域] 電學

[來源] 課本習題

[題目]
According to its design specification,the timer circuit delaying the closing
of an elevator door is to have a capacitance of 32.0μF between two points
A and B.

(a)When one circuit is being constructed, the inexpensive but durable capacitor
installed between these two points is found to have capacitance 34.8μF.
To meet the specification, one additional capacitor can be placed between the
twopoints. Should it be in series or in parallel with the 34.8μF capacitor?
What should be its capacitance?

(b)What If? The next circuit comes down the assembly line with capacitance
29.8μF between A and B. What additional capacitor should be installed in
series or in parallel in that circuit, to meet the specification?

[瓶頸]

題目意思不太懂  只知道他是要問應該用並聯or串聯好  可是不懂為什麼@@a

可否幫忙解釋一下  Thx

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Ans: (a)series  (b)parallel

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