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An RC circuit consists of a resistor of 4 MΩ in series with a 5μF capacitor...

An RC circuit consists of a resistor of 4 MΩ in series with a 5μF capacitor and a battery of
Ɛ= 9 V and a switch. At t = 0 s, the switch is closed and the capacitor is allowed to charge.
a) Calculate the charge on the capacitor plates after 5 seconds.
b) Calculate the voltage across the capacitor and the resistor after 5 seconds.
c) Calculate the current flowing through the resistor after 5 seconds.
d) How long will it take for the charge on the capacitor to reach 90% of its maximum
value?

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