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x G A coil is formed by wind x XC A Coil is Formed By Wine x ecure https://edugo plus.com/edugen/student/mainfr.uni en.Miley PLUS HY Wiley PLUS Chapter 26. Problem 025 Google Chrome a Secure I https://edugen wileyplus.com/edugen/shared/assignment/test/aprintuni Print by: AHMED AL FAIFI PHYS 1304-0002: Introductory Electricity and Magnetism Hw6 Chapter 26, Problem 025 A wire with a resistance of 6.5 n is drawn out through a die so that its new length is 2 times its original length. Find the resistance of the longer wire, assuming that the resistivity and density of the material are unchanged. Number Units the toleranoe as +/-1 m the 2nd signincant digit Question Attenmpts: o of 56 us

Explanation / Answer

Given L2= 2 L1

V = A L

V1 = V2

A1 L1 = A2 L2 , A2 = A1 (L1 / L2)

A2= A1 ( L1 / 2 L1) = A1 / 2

R = p L/A , R1 = p (L1 / A1) , R2= p (L2 / A2)

R2 = p (2 L1 / (A1 / 2) ) = 4 p ( L1 / A1) = 4 R1

= 4 * 6.5

R2 = 26 ohms

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