Question

plz keep in mind sig figures and answer all 3 parts :)

A 5.70-m length of 2.6-mm-diameter wire carries a 690 mA current when 23.0 mV is applied to its ends. reen Sh 07...13.1 Part A Determine the resistance R of the wire. Express your answer to two significant figures and include the appropriate units. reen Sh 07...13. uA R= Value Units Submit Request Answer Part B Determine the resistivity p. Express your answer to two significant figures and include the appropriate units. Screen Shot 2020-07-30 at 10.13.17 PM ? G μΑ Search p= Value Units Part C Submit Request Answer If the drift speed is 1.4 x 10-5 m/s, determine the number n of free electrons per unit volume. Express your answer using two significant figures. ΟΙ ΑΣφ ? electrons n= Submit Request Answer

Answer 1

2.6mm => = D= 1.371003m Given l= 5.70m D (= 690mA= 0.69 A E = 23.0mV = 2.3x10? V e=iR A) R= 2.3x102 &li 0.69 R = 33.33MR B Since R= f I A R (G92) e I 8 = 8= RA 33.33X10-3 5.7 3.10X109 Rom 3.14X{13x163)? S Ud = 1.4X1 1-4X105 i= neaud 0.69 Na = eAva 7.6% 1019 X 3.14 X (1-3X153 ) 74 x16 28 n = 5.80 x 10 m3 cs canned with CamScanner