The resistance of the wire used for telephone is 35 Q per kilometre when the weight of the wire is 5 kg per kilometre. If the specific resistance of the material is 1.95 x 10^(-8) Q-m, what is the cross-sectional area of the wire ? What will be the resistance of a loop to a subscriber 8 km from the exchange if wire of the same material but weighing 20 kg per kilometre is used ? nM OHM NOTE ROUND OFF YOUR ANSWER TO THE NEAREST WHOLE NUMBER

The resistance of the wire used for telephone is 35 Q per kilometre when the weight of the wire is 5 kg per kilometre. If the specific resistance of the material is 1.95 x 10^(-8) Q-m, what is the cross-sectional area of the wire ? What will be the resistance of a loop to a subscriber 8 km from the exchange if wire of the same material but weighing 20 kg per kilometre is used ? nM OHM NOTE ROUND OFF YOUR ANSWER TO THE NEAREST WHOLE NUMBER

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter10: Using Wire Tables And Determining Conductor Sizes

Section: Chapter Questions

Problem 10PP: Determine the ohms-per-mil-foot of an aluminum conductor located in an area with a temperature of...

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