Compute all parts of following problem:
Problem: A copper wire has a square cross section 2.7mm a side. The wire is 4.4m long and carries a current of 3.6A. The density of free electrons is 8.5 × 1028m3.
Part A: Find the magnitude of the electric field in the wire?
Part B: How much time is required for an electron to travel the length of the wire?
I want help to find how much time is required for an electron to travel the length of the wire.