Fixed Resistors.

       Fixed resistors පිළිබඳ සරල සිංහලෙන් දැනගමු!
•Resistance is the opposition for the current flow.•Resistance is measured in ohms (Ω)•Fixed resistors have a fix value of resistance.•Circuit Symbols:



  

•Physical appearance of the resistor :




 • Resistance can be measured directly multimeter .
Steps :
´Set the multimeter to the resistance range
´Connect the resistor to the multimeter leads

´Take the reading on the display





´Resistance of the resistor can also be calculated using the colour bands printed on the surface of the resistor:

´Steps
 ´Observe the 1st 3 color bands of the resistor (starting from the opposite end to silver or gold color band)
´Each colour represents a number.

´Combining the numbers we can calculate the resistance value.





Example 1 :



Example 2 :


´The 4th color band gives the tolerance of the resistor
-Silver represents a tolerance of +/-10%
-Gold represents a tolerance of +/-5%

´Consider the following resistor and calculate its resistance:


Example 3:

PDF Download - https://goo.gl/Id95yA







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