General Uses Electrical Formulas

Electrical Formulas:-

Electrical Current Formulas

Electrical Current Formulas in DC Circuit

I=V/R

I = P/V

I = √P/R

*Where

I = Current in Amperes (A)

V = Voltage in Volts (V)

P = Power in Watts (W)

R = Resistance in Ohm (Ω)

Electrical Current Formulas in Single Phase AC Circuit

I = P / (V x Cosθ)

I=(V/Z) …Where Z = impedance = Resistance of AC Circuits

Electrical Current Formulas in Three Phase AC Circuit

Ohm’s Law with simple example

The relationship between Current through and Voltage across a conductor was first discovered by a German scientist George Simon Ohm. This relationship is called Ohm’s Law and be stated as;

The Current “I” flowing through a conductor is directly proportional to the potential difference i.e. Voltage “V” across its ends provided the physical conditions (i.e. temperature, strain, etc) do not change.

In other words;

In any electric circuit, the Current “I” is directly proportional to the applied Voltage “V” and inversely proportional to the

What is Motor Efficiency & How to improve it?

Electric motor is a type of machine which converts electrical energy into mechanical energy using the interaction between magnetic field and current in its winding to produce/generate force in the motor. If we actually reverse this process then mechanical energy is converted into electrical energy and that is done by generators .Electromagnetism Is the main phenomenon that is used by motors.