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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 = %3D

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 = %3D

College Physics
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
Transcribed Image Text: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
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