Why does a current flow in a resistor-capacitor circuit

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1) A capacitor consists of two metal surfaces separated by an electrical insulator with no electrically conductive path through it. Why does a current flow in a resistor-capacitor circuit when the switch is closed?

2) If a 100 Ω resistor is placed across a 0.10 μF charged capacitor which is initially charged to 3 V, how long does it take it to discharge to 2 V? To 1 V?

3) How does the initial value of the current in an RC circuit depend upon the (a) resistance? (b) capacitance?

Questions 4 & 5: A power supply, resistor, and capacitor are all connected in series with V = 24 V, R = 22 kW, and C = 150 pF respectively. When t = 0, the capacitor is completely uncharged.

4) What is the time constant for the circuit?

5) What is the voltage across the capacitor at t = 25 ns?

Reference no: EM132583197

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