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Real and Ideal Sources
Ohms Law - h1011v1_38

Electrical Science Volume 1 of 4
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Basic Electrical Theory UNITS OF ELECTRICAL MEASUREMENT UNITS OF ELECTRICAL MEASUREMENT Using  Ohm’s  Law  and  the  System  Internationale  (SI)  Metric  System,  electrical measuring units can be derived. EO 1.3 DESCRIBE the following electrical parameters, including the unit of measurement and the relationship to other parameters. a. Voltage b. Current c. Resistance d. Conductance e. Power f. Inductance g. Capacitance EO 1.4 Given any two of the three component values of Ohm’s Law, DETERMINE the unknown component value. System Internationale (SI) Metric System Electrical units of measurement are based on the International (metric) System, also known as the SI System.   Units of electrical measurement include the following: Ampere Volt Ohm Siemens Watt Henry Farad Appendix  A  provides  more  information  concerning  the  metric  system,  metric  prefixes,  and powers of 10 that are used in electrical measuring units. Voltage Voltage, electromotive force (emf), or potential difference, is described as the pressure or force that causes electrons to move in a conductor.   In electrical formulas and equations, you will see voltage symbolized with a capital E, while on laboratory equipment or schematic diagrams, the voltage is often represented with a capital V. Rev. 0 Page 13 ES-01







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