and current diagram for Fig. 6.1, drawn to correspond with Fig. 5.2
growing faster than at any other stage in the cycle. So we may expect
the current to be greater than at any other times. At points marked b,
the charge is decreasing as fast as it was growing at a, so the current is
the same in magnitude but opposite in direction and sign. At points
marked c, the charge reaches its maximum, but just for an instant it
is neither growing nor waning; its rate of increase or decrease is zero,
so a
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