Consider two wires A and B, in which the number of electrons flowing per unit of time is the same. The wires are identical in terms of material, but the diameter of wire A is 0.8 cm, and of wire B is 1.6 cm. If in wire A electron drift speed is 3.2 × 10^-4 m/s, find the electron drift speed in wire B.

• A. 8.0 × 10^-5 m/s​
• B. 4.0 × 10^-5 m/s
• C. 12 × 10^-2 m/s
• D. 16 × 10^-5 m/s

Answer: (A)