Biot-Savart Law: Find formula for B at general pt (x, y, z)

1. Nov 4, 2009

plexus0208

1. The problem statement, all variables and given/known data
See attachment for Problem Statement.

2. Relevant equations

3. The attempt at a solution
Can anyone help me start this problem, or clarify what is being asked? I have no idea where to begin.

2. Nov 5, 2009

Andrew Mason

The first part is simply asking you to evaluate B in terms of x,y,z. This involves expressing $\hat{k} \times \vec r$ and r in terms of x, y and z.

In the second part the key is to determine when $\hat{k} \times \hat r$ will be maximum (cross product of the unit vectors in the k direction and the r direction).

AM