# Painless Surge

**Electricity and Magnetism**Level 3

Consider a wire of length 4 m and cross-sectional area \(1 \text{ mm}^2 \) carrying a current of 2 A. If each cubic meter of the material contains \(10^{29}\) free electrons, find the average time taken by an electron to cross the length of the wire.

Note: Put your answer in hours.