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Figure shows a circuit with the following circuit elements: R₁ = 2 kΩ, R₂ = 10 kΩ, R₃ = 6 kΩ, R₄ = 9 kΩ, C= 1.9 μF, and the voltage source V = 12 V.

209_Figure shows a circuit with the circuit elements.jpg

At time t = 0, the switch S is closed and the capacitor starts charging. What is the current through the switch right after the switch is closed?

What is the current a long time after the switch is closed?

If 'point a' is grounded, what is the potential at 'point e' a long time after the switch is closed?

What is the charge on the fully charged capacitor?

After the switch is opened, how long does it take for the capacitor to discharge to 10% of its full charge?

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