If a Metallic Wire of Cross-Sectional Area 4

Multiple Choice

If a metallic wire of cross-sectional area 4.0 × 10−⁶ m² carries a current of 7.0 A and has a mobile charge density of 4.24 × 10²⁸ carriers/m³,what is the average drift velocity of the mobile charge carriers? (charge value = 1.6 × 10−¹⁹ C)

A) 1.8E+3 m/s
B) 1.7E+3 m/s
C) 4.1E-4 m/s
D) 2.6E-4 m/s
E) 7.0E-6 m/s