Maxium Allowable Current to (+/-) 2% ??? 1. The problem statement, all variables and given/known data An experiment on the Earth's magnetic field is being carried out 7.00 from an electric cable. What is the maximum allowable current in the cable if the experiment is to be accurate to 2.0 ? Assume that Earth’s magnetic field is . 2. Relevant equations B = [I*μ]/[2*Pi*d] 3. The attempt at a solution Check the picture to see how far I've gotten, but it's still wrong. I'm not sure how to attempt this problem.