5. How many 10 k2 resistor should you connect in parallel to have a total resistance of 2.5 kQ when the parallel combination of those resistors is connected in series with a 1.5 kQ resistor? * O : 10 O : 12 O :4 O :7 6. Based on this chart, what material was used to manufacture a wire if its resistance is 4.46 milliohm when the length of the wire is 50m and has a radius of 10mm? * TABLE 30.2 Resistivity and conductivity of conducting materials Resistivity (N m) Conductivity (N-'m-) Material Aluminum 2.8 X 10-8 3.5 x 10 Сорper 1.7 X 10* 6.0 x 10 Gold 2.4 X 108 4.1 X 107 Iron 9.7 X 108 1.0 x 10 Silver 1.6 X 108 6.2 x 10 Tungsten 5.6 X 10 1.8 x 107 Nichrome" 1.5 X 106 6.7 x 10 Carbon 3.5 x 105 2.9 x 10 "Nickel-chromium alloy used for heating wires. • Silver • Aluminum • Gold • Copper

5. How many 10 k2 resistor should you connect in parallel to have a total resistance of 2.5 kQ when the parallel combination of those resistors is connected in series with a 1.5 kQ resistor? * O : 10 O : 12 O :4 O :7 6. Based on this chart, what material was used to manufacture a wire if its resistance is 4.46 milliohm when the length of the wire is 50m and has a radius of 10mm? * TABLE 30.2 Resistivity and conductivity of conducting materials Resistivity (N m) Conductivity (N-'m-) Material Aluminum 2.8 X 10-8 3.5 x 10 Сорper 1.7 X 10* 6.0 x 10 Gold 2.4 X 108 4.1 X 107 Iron 9.7 X 108 1.0 x 10 Silver 1.6 X 108 6.2 x 10 Tungsten 5.6 X 10 1.8 x 107 Nichrome" 1.5 X 106 6.7 x 10 Carbon 3.5 x 105 2.9 x 10 "Nickel-chromium alloy used for heating wires. • Silver • Aluminum • Gold • Copper

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter21: Circuits And Dc Instruments

Section: Chapter Questions

Problem 28PE: Integrated Concepts A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being...

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Consider a power plant is located 60 km away from a residential area uses Q-gauge (A=42.40mm2) wire ofcopper to transmit power at a current of I = 100.00 A.How much more power is dissipated in the copper wires than it would be in superconducting wires?
Integrated Concepts A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg. °C, assuming no heat escapes?
A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?
Check Your Understanding Verify that /V and e0/d have the same physical units.
An 80-2 resistor and a 20-2 resistor are connected in parallel, and then this combination is connected in series with a 32- resistor and a 24-V battery. An ammeter to measure the current through the 80- 2, and a voltmeter to measure the potential difference across the 32 Q is needed. TOraw the cireit 2 K he total 1e meter astanco of the cire What is the difference -potential across the 32-Q resistor? Across the 80-2 resistor? = 5. What is a fuse and how does it protect a circuit or device to which it is connected? 6. Show using diagrams how using only 2 Q resistors the following resistances can be made: ( a) 0.5 Ω (b) 1 Ω, ( c )3 Ω; ( d ) 5 Ω. 7. Three wires in a circuit meet in a common point. The currents flowing in two of them are 2 A and 3 A respectively. What are the possible values of the current in the third wire? Explain your answer [drawings would help]. D koksch_b201pdt Show AN MacBook Air esc 288 10 F11 F12 %23 & 2 4. 6. 8 9 11 delete Q W R T Y tab ps lock S D G H J. 11 K L…
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V:OA exp1.pdf > Calculate the value of each resistor below based on its color code. Table 2-2 O0os Table 2-3 OORS Table 2-4 YVRG Table 2-5 RRR G Table 2-6 RBBG Table 2-7 BBRG Table 2-8 YVRS Table 2-9 YBOG Table 2-10 BBOG Table 2-11 RBRG Fig.(3) 3. Record resistor colors gave to its value in below : 4.7 KO+5% , 9100 +10% , 12 Q t5%, 6.8ΚΩ 20% ...
3. In Fig. 3, the resistances are R1 = 20.0 W and R2 = 40.0 W, and the ideal batteries have emfs E3=E1 = 10.0 V and E2 = 20.0 V. What is the potential difference Va - Vb? (Fig.3) ) (Show step by step solution)
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QUESTION In comparing wires of identical shape and carrying the same current but made of different metals, is the drift velocity in each wire inversely proportional to the number density of charge carriers? O Yes. To have the same current from k times as many carriers, it takes 1/k times the drift speed. Yes. To have the same current from k times as many carriers, it takes k times the drift speed. No. The drift velocity is directly proportional to the number density of carriers. No. The drift velocity is the same for all conductors. PRACTICE IT Use the worked example above to help you solve this problem. The amount of charge that passes through a filament of a certain lightbulb in 1.77 s is 1.50 C. (a) Find the current in the bulb. A (b) Find the number of electrons that pass through the filament in 4.61 s. electrons (c) If the current is supplied by a 12.0-V battery, what total energy is delivered to the lightbulb filament? J What is the average power? W
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