PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
5th Edition
ISBN: 9780134378053
Author: GIANCOLI
Publisher: RENT PEARS
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A 1 Ω resistor and a 4 Ω resistor are connected in parallel. The combination is connected in series with a 5.2 Ω resistor and a 24 V supply.
(iii) Calculate the voltage (in V) across the 1 Ω resistor
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.
(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 resistor
Chapter 25 Solutions
PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
Ch. 25.2 - If 1 million electrons per second pass a point in...Ch. 25.2 - Prob. 1BECh. 25.3 - Return to the Chapter-Opening Question, page 651,...Ch. 25.4 - Prob. 1DECh. 25.4 - Prob. 1EECh. 25.4 - Prob. 1FECh. 25.4 - How many 60-W 120-V lightbulbs can operate on a...Ch. 25.6 - Each channel of a stereo receiver is capable of an...Ch. 25 - What quantity is measured by a battery rating...Ch. 25 - When an electric cell is connected to a circuit,...
Ch. 25 - When a flashlight is operated, what is being used...Ch. 25 - One terminal of a car battery is said to be...Ch. 25 - When you turn on a water faucet, the water usually...Ch. 25 - Can a copper wire and an aluminum wire of the same...Ch. 25 - The equation P = V2/R indicates that the power...Ch. 25 - What happens when a lightbulb burns out?Ch. 25 - If the resistance of a small immersion heater (to...Ch. 25 - Prob. 10QCh. 25 - Explain why lightbulbs almost always burn out just...Ch. 25 - Which draws more current, a 100-W lightbulb or a...Ch. 25 - Electric power is transferred over large distances...Ch. 25 - A 15-A fuse blows repeatedly. Why is it dangerous...Ch. 25 - When electric lights are operated on low-frequency...Ch. 25 - Driven by ac power, the same electrons pass back...Ch. 25 - The heating element in a toaster is made of...Ch. 25 - Is current used up in a resistor? Explain.Ch. 25 - Compare the drift velocities and electric currents...Ch. 25 - A voltage V is connected across a wire of length l...Ch. 25 - Why is it more dangerous to turn on an electric...Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - (II) A rectangular solid made of carbon has sides...Ch. 25 - (III) A hollow cylindrical resistor with inner...Ch. 25 - Prob. 63GP
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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 wwarrow_forward(II) You want to design a portable electric blanket that runson a 1.5-V battery. If you use a 0.50-mm-diameter copperwire as the heating element, how long should the wire be ifyou want to generate 18 W of heating power? What happensif you accidentally connect the blanket to a 9.0-V battery?arrow_forward(6) Suppose two electrical resistors with resistance R₁> 0 and R₂ > 0 are wired in parallel in a circuit: R₁ ww R₂ 1 1 1 + Then the combined resistance R, measured in ohms (2), is given by R R₁ R₂ ƏR ƏR (a) Find and after solving for R (e.g., R= ...). ƏR₁ ƏR₂ (b) Describe how an increase in R₁ with R₂ held constant will change R. (Will R increase or decrease?) (c) Describe how a decrease in R₂ with R₁ held constant will hange R. (Will R increase or decrease?)arrow_forward
- A 1 Ω resistor and a 4 Ω resistor are connected in parallel. The combination is connected in series with a 5.2 Ω resistor and a 24 V supply. (ii) Calculate the voltage (in V) across the 5.2 Ω resistorarrow_forward4) 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) 30arrow_forward35 (a) For the circuit shown in Fig. 20-27, let & = 10 V, R = 5.0 N, and C = 0.1 F. What is the current at b just after the switch is closed? (b) How much charge will have passed b by the time %3D %3D %3D the current goes to zero? (c) Find the current at the instant the capacitor has a charge of 0.20 C. 9. Soitch Sarrow_forward
- (c) Laura now adds another resistor, R2, in parallel to resistor R₁. 7 the 2.1 R₁ + R₂ 12V 4.8 Discuss how adding the additional resistor affects the power dissipated by the 3.50 resistor. 3.5 resistance of the 3.5.-22 resistor decreases? di ko na gets sir. Soufflearrow_forward(II) An electric circuit was accidentally constructed usinga 7.0µ F capacitor instead of the required 16 µ F value.Without removing the 7.0µ F capacitor, what can a technician add to correct this circuit?arrow_forwardSuppose that by mistake you leave ten 50-W light bulbs turned on at your house for 24 hr. Say that the cost of electricity is 6 cents per kW · hr. (i)How many Joules are used by the ten light bulbs over the 24 hours? (ii) calculate the cost for this mistake?arrow_forward
- (3) A battery whose emf is 6 V is connected to a 202 resistor. The voltage drop across the 22 resistor is 5V. What is its internal resistance? A) 2.402 B) 1.72 C)0.502 D) 2.592 Ε) 0.4Ωarrow_forwardA 1 Ω resistor and a 4 Ω resistor are connected in parallel. The combination is connected in series with a 5.2 Ω resistor and a 24 V supply. (i) Calculate the current (in A) flowing through the 5.2 Ω resistorarrow_forward(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"arrow_forward
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