1. The problem statement, all variables and given/known data a transformer with a core flux of 5 milliwebers has a primary winding of 1000 turns calcuate the primary voltage if the transformer operates at 50 Hz cycle. 2. Relevant equations Unknown 3. The attempt at a solution Im following a self paced work book, and to my knowledge, I cant seem to find the formula for this equation. any help would be greatly apperciated!