P 7.2-1 A 15-μF capacitor has a voltage of 5 V across it at t = 0. If a constant current of 25 mA flows through the capacitor, how long will it take for the capacitor to charge up to 150 μC?

Answer: t = 3 ms

Current can be written as

Solving for time

integrating

So time is

Current is constant 25 mA and final charge is given as 150 µC, so we just need initial charge on capacitor which we can get from

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