Consider the following. (Take R₁ 10.12, R₂ = 8.4 $2, and R3 = 4.4 = 1.0 92 a www 2.0 2 Zui bww R₁ R3 (a) Find the equivalent resistance between points a and b in the figure below. (b) Find the potential difference Vab that will produce a current of 1.0 A in the 2.0 resistor. R₂ www 3.0 Ω www

Consider the following. (Take R₁ 10.12, R₂ = 8.4 $2, and R3 = 4.4 = 1.0 92 a www 2.0 2 Zui bww R₁ R3 (a) Find the equivalent resistance between points a and b in the figure below. (b) Find the potential difference Vab that will produce a current of 1.0 A in the 2.0 resistor. R₂ www 3.0 Ω www

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 67PQ

See similar textbooks

Similar questions

Resistors are commonly rated at 18W,14W,12W ,1 W and 2 W for use in electrical circuits. If a current of1 = 2.00 A is accidentally passed through a R=1.00 resistor rated at 1 W, what would be the most probable outcome? Is there anything that can be done to prevent such an accident?
A portable coffee heater supplies a potential difference of 12.0 V across a Nichrome heating clement with a resistance of 2.00 . (a) Calculate the power consumed by the heater. (b) How many minutes would it take to heat 1.00 kg of coffee from 20.0C to 50.0C with this heater? Coffee has a specific heat of 4 184J/(kg C). Neglect any energy losses to the environment.
Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.
Two ideal batteries: V1 of potential 27.02V and V2 of potential 5.89V provide power to the following circuit. If R1 has a resistance of 3.46Ω, R2 has a resistance of 6.04Ω and R3 has a resistance of 2.44Ω. What is the current through R2?
An ideal battery produces a potential difference of 17.45V and is connected to 4 resistors as shown below. R1 has a resistance of 2.44Ω, R2 has a resistance of 2.43Ω, R3 has a resistance of 3.39Ω, and R4 has a resistance of 1.98Ω. From this arrangement, What is the current through R4?
A certain flashlight is connected to a 6.0-Vemf battery and has an internal resistance of 0.100. What power does the 0.500 M load dissipate? If the internal resistance grows to 0.400 2, what is the new current, terminal voltage, and power dissipated by a 0.500 M load resistance?
A resistor of resistance R=9 and a resistor with variable resistance is connected to an ideal battery whose emf is =129V as shown in the figure below. The variable resistor is made up of a rectangular prism of a=7.7cm, b=2.81cm, L=50cm , and the material has resistivity =0.51 . The distance of the contact point from the edge can be adjusted to change the value of the resistance. For x=8.6cm find is the power dissipated on the resistor R. Express your final result with zero decimal places.
Given that V= J/A-s and 1 Kwh = 3.6 x106 J, what does it cost to operate a window-type air conditioning for one hour if the unit requires a 10-Amp current at 110V and electric energy costs 5 cents per Kwh? Compute the cost at 5.0 cents/Kwh of operating an electric motor that takes 15 Amp at 110V.
The Iceberg Kid, infamous for imposing a deep freeze on whoever disagrees with him, discovers that in his advanced teenaged years his hands constantly feel chilled. As he is a cool physics student, the Iceberg Kid quickly calculates the resistance of the resistor needed to warm his hands. Given that 185 J185 J of thermal energy is generated by the resistor during 6.19 s6.19 s of operation while connected to a 12.0 V12.0 V battery, find the correct value of this resistance (and avoid a cold, cold fate).
In (Figure 1), the battery has negligible internal resistance and EMF = 44.0 V. R1 = R2 = 3.40 Ω and R4 = 3.70 Ω. What must the resistance R3 be for the resistor network to dissipate electrical energy at a rate of 275 WW?
A person standing barefoot on the ground 20 m from the point of a lightning strike experiences an instantaneous potential difference of 300 V between his feet. If we assume a skin resistance of 1.0 kΩ, how much current goes up one leg and back down the other?
An electronic device designed to operate at any temperature in the range from −10.0 °C to 55.0 °C contains pure carbon resistors. By what factor does their resistance increase over this range?