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[* black] These, my friends,So, what are resistors.resistors, and why do we care about them? Resistors are used in circuitry to control the amount of current flowing throughflow. The more resistance (measured in Ohms) a given circuit. Much like water flowing through a pipe, the narrower the resistor ishas, the less current that flows through itit allows to flow.
[* black] The difference betweencolored bands on a resistor are the two resistors shown is their amountskey to determining the resistance of resistance. But how can you tell? See those little colored rings, that's how you knowthat particular resistor.
[* black] TheIf there are four bands on your resistor, the first ringband to locate when reading a resistor is the red, gold, silver or blank onesilver band on one of the swollen ends. Theseends; these are called tolerance bands. No resistor is exactly the value it indicates, so [http://www.bcdxc.org/resistor_color_codes.htm|tolerance bands] tell you within what percent the reading is. InSince our case,resistors have gold bands, then we know the tolerance bandactual resistance is gold, indicating a 5% tolerance.within ±5% of the nominal value
[* black] These, my friends,So, what are resistors.resistors, and why do we care about them? Resistors are used in circuitry to control the amount of current flowing throughflow. The more resistance (measured in Ohms) a given circuit. Much like water flowing through a pipe, the narrower the resistor ishas, the less current that flows through itit allows to flow.
[* black] The difference betweencolored bands on a resistor are the two resistors shown is their amountskey to determining the resistance of resistance. But how can you tell? See those little colored rings, that's how you knowthat particular resistor.
[* black] TheIf there are four bands on your resistor, the first ringband to locate when reading a resistor is the red, gold, silver or blank onesilver band on one of the swollen ends. Theseends; these are called tolerance bands. No resistor is exactly the value it indicates, so [http://www.bcdxc.org/resistor_color_codes.htm|tolerance bands] tell you within what percent the reading is. InSince our case,resistors have gold bands, then we know the tolerance bandactual resistance is gold, indicating a 5% tolerance.within ±5% of the nominal value
[* black] Next, you can read the resistance. All readings are in Ohms. Starting with the band on the opposite end of the tolerance band, you read inwards with each band color indicating a specific number until you only have one band left before the tolerance band. In both resistors, the first two bands are yellow then violet, indicating [http://www.bcdxc.org/resistor_color_codes.htm|2 then 7] for the number 27. The last band before the tolerance is the multiplier. For the first one (left) the third band is red indicating x100. For the second (right) it is brown indicating x10.
[* black] From all of this, we read these as 270 and 2700 Ohm resistors +/- 5 percent.

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