Fundamental of electrical

 • Electricity : It's is a form of energy which is produced by mechanism and transmitted by using a conductors for utilisation.

• Two types of Electricity :

  Static and Dynamic :

 • Static electricity - electrons are stable or constant.

 • Dynamic electricity - electrons are not stable or not constant.

     - there are two types of dynamic electricity.

    a) AC form and b) DC form : 

  • AC - It's moves forward and reverse direction.

 Reactance(inductive+capacitive)+resistance=impedance (z).

 • DC - It's moves either forward and reverse direction & It's has only Resistance.

• Types of theory :

 a) Convection theory and b) Electron theory.

a) Convection theory : electrons flow from positive'+' to negative '-'.

b) Electron theory : electrons flow from negative'-' to positive'+'.