Answered: 1) Read the resistance The numbers in…

1) Read the resistance The numbers in the parentheses are the color code 1: Grey (8) 2: orange (3) 3: Orange (3) 4: None (20 %) Ans 2) calculate the total resistance in the series Ri Ra

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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1. ) The resistance of a wire of 0.02 cm radius is 40. If the material is copper of resistivity 1.72x10-Qm, what is the length of the wire? Answer : length of wire = (ii) The following table shows the electrical appliances used by a person for every day. No. Electrical No. of Appliances Time of use Appliances 1. Lamp (60W) 8 12 hours/day 2. Electric 4 6 hours/day Heater(1500W) Refrigerator (100W) 3. 1 24 hours/day Calculate the electricity bill of the household for the month if the cost per unit of electric energy is 10 Bz/ kWh. (1) Total energy(in kWh) consumed in the month %3D kWh (2) Electricity bill(in riyals) for the month riyals %3D
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% ...
R1 = 1 kohms R2 = 1.4 kohms R3 = 6.8 kohms E = 8VD1: Si, rB = 2 ohms, rR = 215 kohms D2: Si, rB = 7 ohms, rR = 590 kohmsApplying first/ideal approximations, determine: a) Current through D1 b) Voltage across D_2 c) Voltage across R_3
Q1 /A piece of metal is its length 5m and its cross-sectional area 0.5 mm^2 and the specific resistance of the metal is 81.6*10^6 Q– m Note that the density of The substance is 8.96 kg/m^3 and the atomic weight 63.54 calculate: 1) Calculate the motion of the electron (H). 2) Calculate the mean free time (7). 3) If you know that the density of electrons along the x-coordinate increases according to the relationship n = 1030 + 8 * 1033x + 15 * 1036 x2 The temperature is 290k, so what is the value of the diffusion current Id at the metal surface x=0 3) If the value of the propagation current is Id at the distance x From the surface of the metal are 91.2*10^10 A/m2 What is the value of x
The Resistance of Nichrome Wire The radius of a piece of Nichrome wire is 0.306 mm. (Assume the wire's temperature is 20°C.) (a) Calculate the résistance per unit length of this wire. SOLUTION Conceptualize This table shows that Nichrome has a resistivity two orders of magnitude larger than the best conductors in the table. Therefore, we expect it to have some special practical applications that the best conductors may not have. Categorize We model the wire as a ---Select--- so that a simple geometric analysis can be applied to find the resistance. Analyze Use this equation and the resistivity of Nichrome to find the resistance per unit length (in 0/m): R 0/m %3D %3D %3D A (b) If a potential difference of 10 V is maintained across a 1.0 m length of the Nichrome wire, what is the current in the wire? SOLUTION Analyze Use this equation to find the current (in A): AV I = %3D A R Finalize Because of its high resistivity and resistance to oxidation, Nichrome is often used for heating…
2. a) The resistivity of copper is 1.7241 x 10-8 (22-m) at 20°C. What is the conductivity of copper at 27°C in units of (0-m)-¹ and (0-cm)-1 if the temperature coefficient of resistivity of copper is 3.9 x 10-³/°C? b) Explain the change of conductivity with temperature. 2 For carbon: - 35 x 10-50-m and g --50 x 10-4 1°C
a) . The equivalent resistant seen by the source. b) The total current I. c) . . The voltage across the 2K resistor. 1 kN 1 kΩ> 4 kN 20V 3 kN 2 kN 6.6 kN
4 Dei U50. CTICE AND -- A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38.8 Q at 20.0°C. If its resistance increases to 39.4 Q at 28.5°C, what is the temperature coefficient of resistivity?
R1 = 1 kohms R2 = 1.4 kohms R3 = 6.8 kohms E = 8VD1: Si, rB = 2 ohms, rR = 215 kohms D2: Si, rB = 7 ohms, rR = 590 kohmsApplying third approximations, determine: a) Current through D1 b) Voltage across D_2 c) Voltage across R_3
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…
e 11: r 711 ".llAsiacell O Home work... -> Determine the values of the current flowing through each of the resistors. If 13 = 0.3A R 102 Ra A 202 10v 20v V, V2 40 2 R4=10
1.) The radius of 22-gauge Nichrome wire is 0.32 mm. (a) Calculate the resistance per unit length of this wire. (b) If a potential difference of 10 V is maintained across a 1.0-m length of the Nichrome wire, what is the current in the wire? 2.) An electric heater is constructed by applying a potential difference of 120 V across a Nichrome wire that has a total resistance of 8.00 V. Find the current carried by the wire and the power rating of the heater.