(II) For the circuit shown in Fig. 19–55, find the potential difference between points a and b. Each resistor has R R = 160 N and each bat- tery is 1.5 V. a 1.5 V• R: R R 1.5 V FIGURE 19-55 Problem 27. b
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- (III) (a) Determine the currents I, 1,, and Iz in Fig. 19–61. Assume the internal resistance of each battery is r = 1.0 N. (b) What is the terminal voltage of the 6.0-V battery? 12.0 V 22 Ω 12 2 28 Ω |12.0 V 11Ω 16 2 FIGURE 19–61 Problems 34 and 35. 6.0 V I3 ww(II) What is the net resistance of the circuit connected to the battery in Fig. 19–50? R R C ww B ww R V R FIGURE 19-50 R A Problems 19 and 20. ww(II) Suppose two batteries, with unequal emfs of 2.00 V and 3.00 V, are connected as shown in Fig. 19–62. If each internal resistance is r = 0.350 N, and R = 4.00 N, what is the voltage R= 4.00 2 E= 2.00 V across the resistor R? FIGURE 19–62 Problem 36. E = 3.00 v"
- - (III) (a) A network of five equal resistors R is connected to a battery & as shown in Fig. 19–60. Determine the current I that flows out of the R battery. (b) Use the value determined for I to find the wwww W R ww single resistor Req that is equivalent R R to the five-resistor R network. FIGURE 19-60 Problem 33.9. (II) A bird stands on a de electric transmission line carrying 2800 A (Fig. 18–34). The line has 2.5 × 10~$ N resistance per meter, and the bird's feet are 4.0 cm apart. What is the potential difference between the bird's feet? FIGURE 18-34 Problem 9.(III) When the resistor R in Fig. 19-73 is 35 N, the high- resistance voltmeter reads 9.7 V. When R is replaced by a 14.0-N resistor, the voltmeter reading drops to 8.1 V. What are the emf and V internal resistance of the battery? ww R FIGURE 19–73 Problem 66.
- (I) Calculate the current in the circuit of Fig. 19–53, and show that the sum of all the r= 2.0 2 voltage changes around the circuit is zero. 9.0 V 9.5 Q FIGURE 19–53 Problem 25. 14.0 2(b) the potent nals a and b; 3 Find the current at point a in Fig. 20-45. duced in the 5 being produce the battery's c 5 A Fig. 20-45 ww ww4) Based on the circuit to the right answer the folowing questbons, SHOW ALL WORK ourrent flows h STEADY STATE (a) The equivalent capacitance and resistance is 20uF c2 (1) (11) () (iv) 26ul, 19kn 5.0uF, 6.0kn 2 5.F. 3 Oko 12V R1 15uF, 14k) 30
- A flashlight bulb rated at 2.0 W and 3.0 V is operated by a 9.0-V battery. To light the bulb at its rated voltage and power, a resistor R is connected in series as shown in Fig. 19–85. What value should the resistor have? R FIGURE 19-85 Problem 87. 9.0 VWhich resistors in Fig. 19–41 are connected in parallel? (a) All three. (b) Rị and R2. (c) R2 and R3. (d) Rị and R3. (e) None of the above. R1 R2 FIGURE 19–41 R3 MisConceptual Question 2.(I) What is the maximum voltage that can be applied acrossa 3.9-kΩ resistor rated at 1/4 watt?