What is Resistor: Resistor is an electrical component used to limit or regulate the flow of electrical current or it is used to divide the voltage in an electronic circuit.
Resistance: The ability of a resistor to oppose the electric current is called resistance.
- It is denoted by R
- SI Unit is ohm (Ω)
Formula:
- By ohm’s law
2. For a wire
Main Characteristics of a Resistor
- Resistance (R):
2. Power rating (in Watt):
Classification of Resistors:
- Fixed Resistors
- Carbon compound resistors
- Wire-wound resistors
- Variable resistors
- Variable carbon compound resistors
- Variable wire-wound resistors
Fixed resistors: Resistors having fixed value of resistance.
Variable resistors: Resistance of these resistors can be varied as per the requirement.
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