1. The problem statement, all variables and given/known data A current is in a straight conductor of length a. a. Show that the magnitude of the magnetic field at point P is B=√2μ0i/8pia . b. Use the result of part a. to find the magnetic field at point P in the current loop below (magnitude and direction). http://postimg.org/image/toaspcmfl/ [url=http://postimg.org/image/toaspcmfl/][img=http://s16.postimg.org/toaspcmfl/Untitled.jpg][/url] 2. Relevant equations B=√2μ0i/8pia 3. The attempt at a solution I have part a, its just that I am having trouble going about part b, any help?