(Solved): A very long, straight horizontal wire carries a current such that \( 8.15 \times 10^{18} \) Part A ...

A very long, straight horizontal wire carries a current such that \( 8.15 \times 10^{18} \) Part A electrons per second pass any given point going from west to east. What is the magnitude of the magnetic field this wire produces at a point \( 4.70 \mathrm{~cm} \) directly above it? Express your answer with the appropriate units. Part B What is the direction of the magnetic field?