1. The problem statement, all variables and given/known data In homogeneous magnetic field the magnetic flux density vector is B = (0, 5T)ez (ez is unit vector in z direction). There is a sphere of radius R = 2cm with its centre at the origin. Find the flux crossing that half of the sphere surface for which z larger or equal to 0! 2. Relevant equations surface integral over B*ez? 3. The attempt at a solution Not sure how to calculate this.. Thanks a lot for any help!