﻿ Electrical Units of Measure

### Engineering Reference Tables / Electrical Units of Measure

Unit of Electrical Units of Measure are used for measurement of electrical things. Units of Electrical Measure are Units of Voltage, Units of Current, Units of Resistance, Units of Conductance, Units of Capacitance, Units of Charge, Units of Inductance, Units of Power, Units of Impedance, Units of Frequency.

 Electrical Parameter Symbol Measuring Unit Formula Voltage V or E Volt Electrical Potential V = I × R Current I or i Ampere Electrical Current I = V ÷ R Resistance R or Ω Ohm DC Resistance R = V ÷ I Conductance G or ℧ Siemen Reciprocal of Resistance G = 1 ÷ R Capacitance C Farad Unit of Capacitance C = Q ÷ V Charge Q Coulomb Electrical Charge Q = C × V Inductance L or H Henry Inductance VL = -L(di/dt) Power W Watts Power P = V × I or I2 × R Impedance Z Ohm AC Resistance Z2 = R2 + X2 Frequency Hz Hertz Frequency ƒ = 1 ÷ T

Multiples and sub-multiples for amperes
 Name Abbreviation Current femtoamps fA 10-15 amperes picoamps pA 10-12 amperes nanoamps nA 10-9 amperes microamps µA 10-6 amperes milliamps mA 10-3 amperes amps A amperes kiloamps kA 103 amperes Mega amps MA 106 amperes Giga amps G 109 amperes Terra amps T 1012 amperes

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