Question

→ C webassign.net/web/Student/Assignment-Responses/last?dep=22554000 rੜਖਾ!!!!! Veg Your last submission is used for your score. 1. + -/1 points SerPSE10 26.1.P.001.MI. My Notes + Ask Your Teacher A 320-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,100 A. If the conductor is copper with a free charge density of 8.50 X 104 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 x 10 for the number of seconds in a year.) Need Help? Read It Master it 2. +-/1 points SerPSE 10 26.1.OP.001. B My Notes Ask Your Teacher An aluminum wire having a cross-sectional area equal to 3.80 x 10m carries a current of 8.00 A. The density of aluminum is 2.70 g/cm. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire. mm/s Need Help? Read ! 3. -/1 points SerPSE10 26.1.P.009. My Notes Ask Your Teacher An electric current in a conductor varies with time according to the expression r(t) = 90 sin (150mt), where I is in amperes and t is in seconds. What is the total charge passing a given point in the conductor from t = 0 tot 1/300 s? Need Help?

Answer 1

The drift velocity and charge

The current is given by 1=ne Ara then Vd = I - nen Vd = - Vd = then 1100 8 - soxig? 8 x 1.6X10 (1 x/2x10 ²²] 6.4uxios mis time will be t = s = 320x103 m Vd . 644x10 s mis t = 49.69x10 8 sec then t = 49.69X10 8 sec X 1 yesas 3 4 5 6 8 10 7 sec t = 157.4 years

The electron density is - n = N S ne 6.02.X1025 x 2.70 X103ks 26.98 10-6m3 n = 6.02 X10 28 electory m3 then I = ne Avd - Va= I nea 602X1028x116810-x3-80X76-6 V = 0.2186 X10-3 Vd = 20 186 810-4 mis

Copent is geven as - I = aq - at dq= a = I at Siat sin (isott) at 9 = go C-cos(isoke) 1 300 9 = -0.191 ( 608 (150 m) – 604 (J] 9 = -0.191 (0-1] 19 0.191 C