What is the resistance of this resistor?(pic included)

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In summary: If you are using fluorescent lighting, you may need to rotate the resistor to get the correct orientation.
  • #1
384
12
I have this resistor, I googled the colour code but didnt quite get from which side you begin to count the lines, maybe someone can help me by telling me the resistance.
 

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  • #3
Most resistors have values take from a list of "preferred values". A 4-band marking will be from the E24 series, where the "third digit" of the value is always 0. If reading from one end gives a preferred value but from the other end does not, it's a pretty good bet that the preferred value is the correct one.

After a while you get to recognize the color combinations of the preferred values (e.g. yellow-violet = 47) without having the decode the digits one by one.

http://www.logwell.com/tech/components/resistor_values.html
 
  • #4
The gold at one end of 4 bands says it is a 5% resistor and the 2 value numbers and the multiplier start at the other end.

As stated, sometimes one needs to guess which end based on standard values.
 
  • #5
well rotating the resistor 180 deg to get the correct orientation you have

or or bk gld gap then tolerance band can't quite make out the colour may be another gold ( 5%)

the 4th band ( gold) indicates a 0.1 Ohm multiplier as per the 1st link in post #2

D
 
  • #6
I didn't think the small reflections and discoloration on the far left were another band. But they could be. (my guess would still be not a band, but it's just that, a guess)
 
  • #7
When I see an E12 resistor, like an old friend, I instinctively “feel” the resistance value without reading the colour bands.
“gold,blk,org,org” just feels like 33R 5%. There is no need to turn it around to recognise it.

The problem I have is with fluorescent artificial lighting where red and orange look the same.
33k = 2k2 often look the same.
 
  • #8
baluncore said:
There is no need to turn it around to recognise it.

was only turning it around for the OP's sake who is obviously not familiar with reading resistors.
All others, like you and me who are skilled with such ... obviously NO NEED !

if that isn't a far end tolerance band then yes it would be a 33R 5% :smile:

Dave
 

1. What is resistance?

Resistance is a measure of how much a material or component resists the flow of electrical current. It is measured in ohms (Ω) and is represented by the symbol R.

2. How is resistance measured?

Resistance is typically measured using a multimeter, which applies a known voltage to the resistor and measures the resulting current. The resistance can then be calculated using Ohm's Law (R=V/I).

3. What factors affect the resistance of a resistor?

The resistance of a resistor is affected by its material, length, cross-sectional area, and temperature. Generally, longer and thinner resistors have higher resistance, while thicker and shorter resistors have lower resistance. Additionally, as the temperature increases, the resistance also increases.

4. How does resistance affect a circuit?

Resistance affects the flow of current in a circuit. Higher resistance means less current can flow, while lower resistance allows for more current to flow. This can impact the overall performance of the circuit and can be used to control the flow of electricity.

5. What is the resistance of this specific resistor?

The resistance of a resistor can vary depending on its material, dimensions, and other factors. To determine the resistance of a specific resistor, it is necessary to use a multimeter or refer to the resistor's specifications. Without further information, the exact resistance of this resistor cannot be determined.

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