(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
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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) 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"Te-Learning Portal Courses - Reports e-Services ▼ Academic Departments - ETC - CIMS Salim During an experiment to verify Ohm's law, the voltage supplied and the current through a circuit are measured. [Voltage is measured in Volt (V) and current in Ampere (A)]. ww R on Battery The measured value of the current is I = 3.1 ± 0.2 A and that of the voltage is V = 14 0.5 V. The resistance of the circuit (in N) can be calculated using the formula, R = V/I, Calculate the, a) Resistance (in 2) = b) Fractional uncertainty in the resistance = c) Absolute uncertainty (in 2) in the resistance=
- 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.-37 In Fig. 27-48, the resistances are R, = 2.00 N, R, = 5.00 N, and the battery is ideal. What value of R3 Ra R3 maximizes the dissipation rate in resistance 3? wwA 12.0-V battery, two resistors, and two capacitors are connected as shown in Fig. 19–87. After the circuit has been connected for a long time, what is the charge on each сараcitor? 1.3 k2 12.0 V= 12 μF - 48 μF 3.3 k2 FIGURE 19-87 Problem 89.
- 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.(b) Consider a particular phone that has a battery rated at 2.500 mAh. The battery operates at a potential difference of 3.90 V. How much energy, in units of kilowatt-hours, is stored in a fully charged battery? 0.975-2 ✓kWh (c) If electricity costs $0.16 (or 16.0 cents) per kilowatt-hour, what is the value of the total amount of energy stored in this battery? Express your answer in cents (or 0.01 of a dollar). How can you relate the energy from part (b) to the cost per kilowatt-hour to find the total cost? (d) When the phone is idle (that is, turned on but not making calls or texts, using GPS, or running any power-hungry apps), it will operate continuously for 32.2 hours from a fully charged battery, until the battery runs out. How much average current does the phone draw while idle? Express your answer in milliamperes, MA
- (I) Calculate the terminal voltage for a battery with aninternal resistance of 0.900Ω and an emf of 6.00 V whenthe battery is connected in series with (a) 71.0 Ωa resistor,and (b) 710Ω a resistorThe current through the 20-N resistor in Fig. 19–81 does not change whether the two switches S1 and S2 are both open or both closed. Use this clue to 20 Ω determine the value of the unknown R resistance R. 10 Ω S2 50 Ω FIGURE 19-81 Problem 83. 6.0 V(b) 50 2 shown in the Figure Q11(b). Find the equivalent resistance across AB. (i) (ii) Find the voltage VAB across AB. 15v Vs Rs R2 A B R1 R3 R1 = 20 92, R2 = 30 2 and R3 = + VAB