C1 is an uncharged capacitor (shown in the circuit above). At t=0 the switch (SW1) is closed, and C1 begins to charge. Which of the graphs above best represents the charge on the capacitor as time passes?
A
Time A
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B
Time B
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C
Time C
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D
Time D
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E
Time E
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Solution
The correct option is B Time A Initially when the voltage is applied, the charges will accumulate on the capacitor plates at a high rate. Then the rate of the charge will decrease with time as the capacitor builds charge. Thus, graph A will be the correct representation the charge on the capacitor as time passes.