3; 4; 5 www.webassign.net This question has several parts that must be completed

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3; 4; 5

www.webassign.net This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Suppose you wish to fabricate a uniform wire from 2.45 g of copper. The wire is to have a resistance of (a) What must be the length of this wire? (b) What must be the diameter of this wire? UM e and all the copper is to be used. Noad Hoip? A current density of 7.50 1013 A/m2 exists in the atmosphere at a location where the electric field is 116 V/m. Calculate the electrical conductivity of the Earth's atmosphere in this region. (2 m) Need Help? N If a certain silver wire has a resistance of 5.00 at 1 9.0°C what resistance will it have at 33.0°C? , S2

Explanation / Answer

in question 3 resistance value is not visible.use the density of copper wire and mass we can calculate volume of the wire ie., A*L i.e, pie*r^2*L

using resistivity formula we can get the L/A value using these two equations we can get A and L.

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