What is a Resistor?
An electric resistor is a two-terminal passive component specifically used to oppose and limit current. A resistor works on the principle of Ohm’s Law which states that voltage across the terminals of a resistor is directly proportional to the current flowing through it.
Types of Resistors:
Fig. 1: Image of Carbon Composition Resistors
Fig. 2: Image of Carbon Film Resistors
Metal Film & Wire Wound Resistors
Thin film & Thick film Resistors
Fig. 5: Image of Thin Film and Thck Film Resistors
Surface mount & Network Resistors
Fig. 6: Image of Surface Mount Resistors
Fig. 7: Symbols of Network Resistors
Fig. 8: Circuit Diagram of Network Resistors
Variable Resistors
Fig. 9: Diagram of Variable Resistors
Fig. 10: Image showing applications of variable resistor
Fig. 11: Image showing different types of variable resistors
Semi Variable Resistors
Fig. 12: Image of Semi Variable Resistors
Special Resistors
Fig. 13: Image of Thermisters
Fig. 14: Image of Light Dependent Resistor (LDR)
Resistance Measurement
Fig. 15 :Image showing color coding of Resistors
Measurementn by using Multimeter
General precautions
Circuit Analysis
Fig. 18: Circuit Diagram of star and delta connections of resistors
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