When applying Kirchhoff's loop rule (such as in Fig. 19–36), does the sign (or direction) of a battery's emf depend on the direction of current through the battery? What about the terminal voltage? r= 1.0 2 E = 18 V R=6.6 N r= 2.0 Q FIGURE 19-36 Question 10. E = 12 V
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- 10MF 4) Find how much time elapses before the charge on each capacitor reach 1/3 of the maximum value once the switch is closed, if R = 100 kohms. 3V R 10pF2μF 297 μC > 180 μC > 270 μC > 324 μC 3μF FIGURE 24-8 90V 6μF 4μF A system of capacitors is connected across a 90 V DC voltage source as shown in Fig. 24-8. What is the charge on the 3 uF capacitor?100 80 60- 40 20 0 v (V) - 20--- - 40 - 60 1 1 I 1 1 I 1 2 3 4 5 6 7 8 9 L 10 11 12 13 14 15 / (ms) Find the average current (in mA) at t = 5 ms if the voltage across 0.06 uF capacitor is shown in the above figure.
- Item 15 Now we will consider some slightly different related scenarios to Example 21-18. Part A Example 21-18 depicts the following scenario. A circuit consists of a resistor R₁ = 126-, a resistor R₂ = 275-, a capacitor C = 182-μF, a switch, and an € = 3.00-V battery all connected in series. Initially the capacitor is uncharged and the switch is open. At time t=0 the switch is closed. increase decrease stay the same 3.00 V Suppose the resistance of the 126-2 resistor is reduced by a factor of 2. Assume everything else in the problem remains the same. Does the final value of the charge on the capacitor increase, decrease, or stay the same? Submit Request Answer ww 126 Ω 182 μF HH 275 Ω < 15 of 15 Review- 6 V + | 2 0 5Ω 10 V ww(III) (a) Determine the currents I₁, 12, and I3 in Fig. 19–61. Assume the internal resistance of each battery is r = 1.0. (b) What is the terminal voltage of the 6.0-V battery? r WITH 12.0 V 22 Ω 12 Ω 28 Ω FIGURE 19-61 Problems 34 and 35. 12.0 V 112 r 16 Ω |_ 6.0 V 13