just tell me how the p.d. increases in a step up transformer. (Please dont use formulas for this.) if we take a conductor of same length and thickness as the 1st one for the secondary coil, the voltage doesn't increase. but why does it,if we increase the length. I mean,how can that affect it? (Please dont use formulas for this,because i want to see how the formula is derived than the other way round) and how does it satisfy the law of energy conservation? Thank You.