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Voltage on a capacitor A capacitor is a device in an electrical circuit that stores charge. In one particular circuit, the charge on the
capacitor Q varies in time as shown in the figure.
a. At what time is the rate of change of the charge Q′ the greatest?
b. Is Q′ positive or negative for t > 0? c. Is Q′ an increasing or decreasing function of time
(or neither)?
d. Sketch the graph of Q′. You do not need a scale on the vertical
axis.
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