A resistor of resistance 2.4 M and a capacitor of capacitance 340 µF are connected in series to a 50 V power s?
A resistor of resistance 2.4 M ohms and a capacitor of capacitance 340 µF are connected in series to a 50 V power supply.
(a) Calculate the time constant.
___________s
(b) Calculate the current at a time when the charge on the capacitor has acquired 90 percent of its maximum value.
____________A
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Verified answer
a) time constant.
θ = R * C ( R Ω , C F , θ s )
θ = 2.4 10^6 * 340 10^-6 = 816 s
b) current at a time when the charge on the capacitor has acquired 90 percent
V capacitor = 50 * 90% =45 volts
I = 0.0997588 I max = 2.0783µA
I max = 50/2.4 MΩ = 20.833 µA
t = 2.305 RC = 1880 s
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