Colour code of resistors, Physics

Assignment Help:

Colour code of resistors:

The current method of colour code marking of resistors is the Band System.

1643_color code.png

Close to one end of the resistor are four coloured bands (there may appear to be only three, in this case the forth band is 'no colour' - see diagram below).  They are known as bands 1 - 4.  Bands 1 and 2 give the first two numbers of the resistor value, band 3 gives the multiplication factor, i.e. the number of zeros, the fourth band gives the tolerance, which indicates how close the actual value may be to the stated value.

Colour

First band

(or body)

First figure

Second band

(or tip)

Second figure

Third band

(or spot)

Multiply by

Fourth band

Tolerance

Black

0

0

1

-

Brown

1

1

10

+1%

Red

2

2

100

+ 2%

Orange

3

3

1000

-

Yellow

4

4

10,000

-

Green

5

5

100,000

+ 0.5%

Blue

6

6

1,000,000

+ 0.25%

Violet

7

7

10,000,000

+ 0.1%

Grey

8

8

-

-

White

9

9

-

-

Gold

-

-

0.1

+  5%

Silver

-

-

0.01

+ 10%

No colour

-

-

-

+ 20%

Certain resistors remain very close to their stated value, despite temperature changes.  These are called 'high stability' resistors and this is shown by a fifth band coloured 'pink'.

 

 

 


Related Discussions:- Colour code of resistors

Can multiple illuminators change colors simultaneously, Can multiple illumi...

Can multiple illuminators change colors simultaneously? Yes. Usually the standard disc rotating motors are of the synchronous form, very reliable, and geared to the most suffi

Atomic structure, Atoms are particles of elements, substances that could no...

Atoms are particles of elements, substances that could not break down further. In examining atomic structure through, we have to clarify this statement. An atom cannot be broken do

Magnetic materials, Materials which can be magnetized are called magnetic m...

Materials which can be magnetized are called magnetic materials. When magnetized, such materials create a magnetic field around them. Some of the significant features of magnetic m

., 100 =6=4=9=7=9

100 =6=4=9=7=9

Estimate ground level no concentration, A stack emitting 85 g/s of NO has a...

A stack emitting 85 g/s of NO has an effective stack height of 100 m. The wind speed is 3 m/s at 10 m, and it is a cloudy summer day.  Estimate ground level NO concentration:

Experimental Uncertainties, you are trying to measure the diameter of a cir...

you are trying to measure the diameter of a circular lab table using a lab metre stick. you measure the diameter in several directions and find the following results: 98.5 cm, 1.00

Magnetometer, discussion for magnetometer experiment

discussion for magnetometer experiment

Light, diffenrence between pure and impure spectrum.

diffenrence between pure and impure spectrum.

Image of this object formed in concave mirror-wave optics, The focal length...

The focal length of a concave mirror is 2 meters. An object is positioned 8 meters in front of the mirror. Where is the image of this object formed? Ans: The image of given ob

Heat transfer, standard dimensions of a tanker truck for storage of crude o...

standard dimensions of a tanker truck for storage of crude oil ... metion its length , siameter, thickness of insulation

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd