Basic Of Electrical Engineering

 Basic Of Electrical Engineering

* Electricity:- There is a nucleus, inside it there are protons and neutrons and outside it there is electrons orbiting us this cycle is known as electricity.

 *Current (I):- An electric current is rate of   flow of electric charge. Current always   flow   from negative to positive.

  SI Unit:- Ampere (A)

 *Voltage (V):- Voltage is the difference in   charge between two points.

 In other way, we can say that pressure   applied to flow the current.

  SI Unit:- Volt (V)

 *Resistance (R):- Resistance is the   opposition to the flow of current.

 SI Unit:- Ohm (Ω)

 *Inductance (L):- It opposes the change in   electric current.

  SI Unit:- Henry (H)

 *Capacitance (C):- It is a dielectric   medium, which used to store the electric   charge in form of DC.

 SI Unit:- Farad (F)

 *Conductor:- A substance by which       electricity can passes easily is called   conductor.

 Example:- Copper, Aluminium, Silver, Gold

 *Insulator:- A substance by which   electricity cannot passes easily is called   insulator.

 Example:- Mica, Glass, Wood, Paper