Question

nand a cross sectional area of 0.270 mm2. If the resistivity of copper is 1.70 x 10 m and a potential difference of 0.500 V is maintained across its lenqth, determine the current in has a length of 1.50 the wire (In A) Need Help? Read It -1 points SerPSE10 26.3.0P010 M Ask Your Teacher My Notes f the magnitude of the drift velocity of free electrons in a copper wire i 10 m/s. what the electric field in the conductor? 8.02 V/m Need Help? Read It Master It 1 points SerPSE10 26.3.P015. O Ask Your Teacher My Notes location where the electric field is 144 V/m. Calculate the electrical conductivity of the Earth's atmosphere in this region. A current density of 4.50 x 10A/m exists in the atmosphere at (n m)-1 Need Help? Read It My Notes Ask Your Teacher -1 points SerPSE 10 26 4 0P011 + A lab technician is studying the effect of temperature on the resistance of a current carrying wire. She applies a voltage to a silver wire at a temperature of 5o. s that it produces a current of 1.10 A. If she then ("C). (Assume that the reference temperature is 20°C.) applies the same voltage to the same wire at -88.0°C, what current should she expect (in A) The temperature coefficient resistivity for silver is 3.80 x 1

Answer 1

The Coppe ixe C Section eg A O. 2 mm 0.2子 Aニ x 10 Resistivity Resistnce tre wixe A 0-27 X1 R 9.44x12 Given Votnge V= 05V O.5 V エR= O.5 Cuovneilt I 9.44Xに2 5.2a A Gven pt elscity 02x

Eectaic fied E 4 S02Xl0 E - 4TT Xlo E 638.21 Vm 13 Cent densit J- 45 Ah Etectxic fred E 44 Vm 11 Electrical nductivity 4.5xi6 E 44 -15 3.125 x lo