3)Two wires have the following dimensions, the first is 5m length and 2cm? indiameter the second is 15 m length and 0.5 cm in diameter ,which wire has agreater resistance ?

let R1 be a resistance of first wire R2 be a resistance of second wire R1 = resistivity×l1A1 l1…

Answered: 3)Two wires have the following…

3)Two wires have the following dimensions, the first is 5m length and 2cm2 in diameter the second is 15 m length and 0.5 cm? in diameter ,which wire has a greater resistance ?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter9: Measuring Instruments

Section: Chapter Questions

Problem 5PP: 5. A digital voltmeter indicates a voltage of 2.5 V when 10 of current flow through a resistor....

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Concept explainers

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

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3)Two wires have the following dimensions, the first is 5m length and 2cm? in
diameter the second is 15 m length and 0.5 cm in diameter ,which wire has a
greater resistance ?

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