Question 8 only resiance, and (b) how many joules(Ans. 20 Ω, 430 Jof energy does the battery lose in a minute?6. An electric heater is constructed by applying a potential difference of 110 V acrossa wire with a resistance of 5 2. What is the power rating of the heater?(Ans. 2.4 kW)7.What is the resistance of a 4.5-m length of copper wire 1.5 mm in diameter?(Ans. 4.3x10² Q)A rectangular solid made of carbon has sides of lengths1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and zaxes, respectively. Determine the resistance for currentthrough the solid in (a) the x direction, (b) the ydirection, and (c) the z direction. Assume the resistivity4,0cm2.0 cmis p-3.0 X 10 Ω.m.(Ans. a) 3.8x10+N, b) 1.5x10-³ Q, c) 6x10-³ Q)10 cm8.

Given : Dimensions of rectangular solid x = 1.0 cm = 0.01 m y = 2.0 cm = 0.02 m z = 4.0 cm = 0.04 m…

8. A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively. Determine the resistance for current through the solid in (a) the x direction, (b) the y direction, and (c) the z direction. Assume the resistivity is p = 3.0 X 105 Q.m. (Ans. a) 3.8x104 2, b) 1.5x10-3 Q, c) 6x10-3 ) 4.0 cm 2.0 cm %3D 10 cm

8. A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively. Determine the resistance for current through the solid in (a) the x direction, (b) the y direction, and (c) the z direction. Assume the resistivity is p = 3.0 X 105 Q.m. (Ans. a) 3.8x104 2, b) 1.5x10-3 Q, c) 6x10-3 ) 4.0 cm 2.0 cm %3D 10 cm

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 69AP: Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r =...

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