If a Metallic Wire of Cross Sectional Area 3

Multiple Choice

If a metallic wire of cross sectional area 3.0 × 10−⁶ m² carries a current of 8.0 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) 3.1 × 10³ m/s
B) 1.9 × 10³ m/s
C) 6.3 × 10−⁴ m/s
D) 3.9 × 10−⁴ m/s
E) 8 × 10−6 m/s