Question

Please it is the last attempt I need clear steps

Review Consider a current flowing in wire made of aluminum (with density 2.702 and atomic weight 26.98 u). Assume that each atom contributes 3.5 conduction electrons. Part A What is the drift speed in a 2.6 mil -diameter aluminum wire carrying 25 A ? If you need help determining the number density of conduction electrons, use the hints! Express your answer using two significant figures. View Available Hint(s) A¢ * R 0 a ? v= 0.0015399 mm/s Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Provide Feedback Next >

Answer 1

Given data 2.702 P= -2.709x to g cm3 atomic weight (m) = 26.980 diameter of wirecd) = 2.6mm = 206x103m I (current) = 25 A we know that drift current I nq vd A vd = I nan

where At Ide = 1 x (2-6x103)2 densityX NA M NA 6.022x 1023 n = 2.7x106 x 6.022x18 23 26.98 28 atoms n- 6.02646x100 ins substitute all the values in the formula vd = 25 6.0 2646 x 12 xqx 5:30924100 % = 3.5e - 3.516% 1019 บละ 6.02646x1028 X3.5616x1696 5-30x106 25 vd - 178, 865•333 vd = 1.397699x109 m

at n, concession of units n= 2.7x8 x 6.022x1,23 atoms cm3 23 26.988 mo) (2.7% lot6 ) x 6.022x10% 26.98

In mm/s the answer is( 0.1397699 mm/s)