what kind of voltage a simple transformer gives? (a) AC (b) DC (c) induced
An ideal transformer performance is based on the next principle. Current passing through the primary coil creates a magnetic field. The primary and secondary coils are wrapped around a core of very high magnetic permeability, such as iron, so that most of the magnetic flux passes through both the primary and secondary coils. If a load is connected to the secondary winding, the load current and voltage will be in the directions indicated, given the primary current and voltage in the directions indicated (each will be alternating current in practice). Therefore, the correct answer is (a): simple transformer gives AC voltage.