An RC circuit has a resistor and capacitor in series with a switch and a battery. The Resistance is 290 kΩ, capacitance of the capacitor is 4 µF, and the battery emf is 12 V. The capacitor is initially not charged. Calculate the current in the circuit 3 s after the switch is closed. Write your answer in micro-amperes (i.e. 10-6 A).

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