Resistor

Description

Resistors – the most ubiquitous of electronic components. They are a critical piece in just about every circuit. And they play a major role in our favorite equation,
Ohm’s Law V = I * R Where
V = Voltage in volts
I = Current in amps
R = Resistance in ohms.

Resistors are electronic components that have a specific, never-changing electrical resistance. The resistor’s resistance limits the flow of electrons through a circuit.
They are passive components, meaning they only consume power (and can’t generate it). Resistors are usually added to circuits where they complement active components like op-amps, microcontrollers, and other integrated circuits. Common resistors are used to limit current, divide voltages, and pull up I/O lines.

Unit : The electrical resistance of a resistor is measured in ohms. The symbol for an ohm is the greek capital-omega: Ω. The (somewhat roundabout) definition of 1Ω is the resistance between two points where 1 volt (1V) of applied potential energy will push 1 ampere (1A) of current.
As SI units go, larger or smaller values of ohms can be matched with a prefix like a kilo-, mega-, or giga-, to make large values easier to read. It’s very common to see resistors in the kilohm (kΩ) and megaohm (MΩ) range (much less common to see milliohm (mΩ) resistors).
For example, a 4,700Ω resistor is equivalent to a 4.7kΩ resistor, and a 5,600,000Ω resistor can be written as 5,600kΩ or (more commonly as) 5.6MΩ.

Power Rating : The power rating of a resistor is one of the more hidden values. Nevertheless, it can be important, and it’s a topic that’ll come up when selecting a resistor type.
Power is the rate at which energy is transformed into something else. It’s calculated by multiplying the voltage difference across two points by the current running between them and is measured in units of a watt (W).
Light bulbs, for example, power electricity into light. But a resistor can only turn electrical energy running through it into heat. Heat isn’t usually a nice playmate with electronics; too much heat leads to smoke, sparks, and fire!
Every resistor has a specific maximum power rating. To keep the resistor from heating up too much, so it’s important to make sure the power across a resistor is kept under its maximum rating.
In addition the power rating of a resistor is measured in watts, and it’s usually somewhere between ⅛W (0.125W) and 1W. Resistors with power ratings of more than 1W are usually referred to as power resistors and are used specifically for their power dissipating abilities.

Package Includes:
1 x Resistor