2. You have a basic \"R-C\" circuit without the one shown here. Let R 8.00 ks2 a

Question

2. You have a basic "R-C" circuit without the one shown here. Let R 8.00 ks2 and C 250, nF an emf, such as and the capacitor is initially charged to a potential of v. At time t 0, the switch is closed and the capacitor begins to discharge. You do NOT need to show your work for fill-in-the-blank questions. or graphing a. (1 pt. what is the initial charge on the capacitor, Quo? b. (1 pt.) What is the initial current that flows in the circuit immediately after the switch is closed? c. (1 pt) What is the initial power dissipated by the resistor, immediately after the switch is closed? d. (4 pts.) At what time does the charge on the capacitor reach 0.100% of its initial value? Show your work.

Explanation / Answer

Qo = CV = 250e-6*10 = 2500 *10^-6 C   <--------answer

Io = V/R = 10/8000 = 1.25*10^-3 A        <--------answer

Po = Io^*R = 0.0125 w           <--------answer

Q = Qo*(e^-t/RC)

0.1 = e^-t/(8000*250e-6)

t = 4.6 s         <--------answer

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