On wikipedia they give a fairly simply explanation of inductance But on http://www.electronics-tutorials.com/ they give a different definition I dont understand the latter there. Theyre saying any solenoid resists current and the higher the inductance the higher the resistance? Another question regarding transformers. From what Ive read the voltage produced in the second coil is directly proportiate to the ratio of windings in each coil. I know that the more windings in the first coil the greater the magnetic flux hence the greater the current induced in the second coil but what I dont understand is how come more windings on the second coil produces higher voltage? Is it solely because theres more wire within the range of the first coils magnetic field or are there other factors involved?