Dynamoeffect

A generator turns a coil with wire on inamagnetic field, this induces and AC current which produces electricity.

 The frequency and voltage can be increased by

1.increasin the numberof coils

2. increasing the numberof rotations

3. Strongermagnets

AC curent is measured in Hz.  The number of cycles per second.  

Cycle :-  When the current has turned in bothe directions.