Electrical & electronic formulas - Basic electronics, electrical units, symbols, basic concepts, DC/AC circuit laws, resistor color code

Electrical Calculators Online electrical calculators for calculations of electricity and electronics. Amps to kW calculator Amps to kVA calculator Amps to VA calculator Amps to volts calculator Amps to watts …

Alternating current circuit laws. AC circuit rules Momentary Voltage Momentary Current Impedance Cartesian form: Polar form Cartesian to polar conversion Polar to Cartesian conversion Phasors …

Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. The resistance is measured in units of ohms (Ω).

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Ohm's law shows a linear relationship between the voltage and the current in an electrical circuit. The resistor's voltage drop and resistance set the DC current flow through the resistor.

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DC circuit rules Ohm's law I = V / R Joule's law P = V · I = I 2 · R = V 2 / R Series circuit rules VT = V1 + V2 + V3 + ... IT = I1 = I2 = I3 = ... RT = R1 + R2 + R3 + ... 1/ CT = 1/ C1 + 1/ C2 + 1/ C3 + ... LT = L1 …

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