Aweb/studen Assignment Response int hdep 15172211 20.A Electric c. x Assign. Wel

Question

Aweb/studen Assignment Response int hdep 15172211 20.A Electric c. x Assign. Welcome, bella, s31ejosu Thursday, February 16 20170 My Assignments Grades communication Calendar My eBooks section A Spring 2017 "My Assignments PHY 242, section A, Electric Current, Resistance, and Ohm's Law (Homework) Instructor: Thomas F 16 2017 11:59 PM E sion Requests Print Assignment Question 1 2 3 4 5 6 7 8 9 Total nment Submission his assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. nment scoring last submission is used for your score My Notes o Ask Yo -1 points 620 1 WA 007 Tutorial. flows when the drift velocity is 1.34 mm/s? Take the density ofcopper to be s.92 x 10 kg/ A copper wire h s a diameter of 1.447 mm. What magnitude cu Additional Materials Reading Tutorial My Notes Ask Yoo

Explanation / Answer

Here,

let the current in the copper wire is I

n = 8.5 *10^28 electrons/m^3

as vd = I/(n * e * A)

1.34 *10^-3 = I/(8.5 *10^28 * 1.602 *10^-19 * (0.001447/2)^2 * pi )

solving for I

I = 30 A

the current in the copper wire is 30 A

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