Draw two graphs, both where the source voltage switches from 0 V to +1 V at t = 0 s: (a) The capacitor quickly saturates (reaches maximum voltage). It takes 0.4 s to reach 63% of maximum. (b) The capacitor slowly saturates. It takes 1.2 s to reach 63% of maximum. If the capacitance is 30 μF, what is the value of the resistor in each case?

Delmar's Standard Textbook Of Electricity
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ISBN:9781337900348
Author:Stephen L. Herman
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Chapter19: Capacitors
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Problem 2PA: You are an electrician working in an industrial plant. You discover that the problem with a certain...
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Draw two graphs, both where the source voltage switches from 0 V to +1 V at
t = 0 s:
(a) The capacitor quickly saturates (reaches maximum voltage). It takes 0.4 s to reach
63% of maximum.
(b) The capacitor slowly saturates. It takes 1.2 s to reach 63% of maximum.
If the capacitance is 30 μF, what is the value of the resistor in each case? 
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