Mean drift velocity of electron in a copper wire having cross-sectional
area 5.0 × 10-6 m2 carrying current of 1 A and having number density 8.5 × 1028
m3 is
A. 0.015 mm s-1
B. 0.1 mm s-1
C. 0.5 mm s-1
D. 0.25 mm s-1
area 5.0 × 10-6 m2 carrying current of 1 A and having number density 8.5 × 1028
m3 is
A. 0.015 mm s-1
B. 0.1 mm s-1
C. 0.5 mm s-1
D. 0.25 mm s-1