in this sections we start with learning about units, charge and current, voltage, energy and power and ohm's law and kirchoff's laws.Ok, lets begin.
Fundamental Units
Basic Units are units which are used as reference in lowering derived unit .Fundamental units is the units that we now use to describe such things as length, mass and time are standardized within the International System of Units. This SI system is based upon the seven fundamental units (see table 1.1).
Derived Units are units derived from the basic unit. All other units are derived from these seven fundamental units. these derived units generally have their own names and those commonly encountered in electrical circuits are summarized in table 1.2 together with the physical quantities to which they relate.
Electrical Units and Symbols
You will find that the following units and symbols are commonly encountered in electrical circuits. it is important to get to know these units and also be able to recognize their abbreviations and symbols (see table 1.3).
Multiples and Sub-multiple
Unfortunately, many of the derived units are somewhat cumbersome for everyday use but we can make life a little easier by using a standard range of multiple and sub-multiple (see Table 1.4)
Unfortunately, many of the derived units are somewhat cumbersome for everyday use but we can make life a little easier by using a standard range of multiple and sub-multiple (see Table 1.4)
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