Resistor definition and example

Resistor

•         Resistor is the electronic component use to reduce the flow of current.

•         Resistors are available at ¼, ½, 1, 2, 4 Watts and we need to select the appropriate one we need depending upon the voltage drop and current flowing through that.

•         In our usual circuits working under 5 to 25 volts we use ¼ W resistors and its size will be small.

•         The value of resistor is being calculated using the color codes given in that.

•         Variable resistors are the resistors whose value could be changed

•         They are of mainly two types: Preset type and Potentiometer Type

•         They are being characterized by the maximum resistance it could offer.

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It is mainly used for making potential divider arrangements.

 

Testing With A Multimeter

•         Select the resistance range in the multimeter

•         Check the resistor with that and get the resistence reading value from that.

•         Compare that value with the one given in the color code. If both the vales remains same within the tolerance range, then it is working fine.