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

Convex lens and concave lens, Convex Lens      Convex lens converges ra...

Convex Lens      Convex lens converges rays parallel to its principal axis. It is thick in the middle and thin at the edged.     It forms real and inverted image of an ob

Calculate the reaction gibbs energy, Under standard state conditions at 37 ...

Under standard state conditions at 37 o C, a biochemical reaction :             A ↔ B + C has an equilibrium constant K = 0.0422  mol/dm 3 . (i) Calculate the standard

Law of universal gravitation, When royce was 10 years old he had a mass of ...

When royce was 10 years old he had a mass of 30kg by the time he was 16 years old his mass increase to 60kg how much larger is the gravitational force between royce and earth at a

Characteristics of resistance, Characteristics of resistance:- Similar ...

Characteristics of resistance:- Similar amount of current passed by each resistance i.e. I = I1 = I2 = I3 = I4 ........ The sum of potential difference across individual res

Polarisation, describe the construction and working of a Nicol prism.discus...

describe the construction and working of a Nicol prism.discuss how you obtain a plane polarised beam with it?

Define uniform velocity, (UNIFORM VELOCITY) (i) When instantaneous velo...

(UNIFORM VELOCITY) (i) When instantaneous velocity and average velocity of a body are equivalent, then the body moves with uniform velocity. (ii When instantaneous velocity

State biot-savart law, State Biot-Savart's law. Using this law, derive the...

State Biot-Savart's law. Using this law, derive the expression for the magnetic field because of a current carrying circular loop of radius 'R', at a point which is at a distance '

What is the width of the slit, In a Fraunhofer diffraction due to sing...

In a Fraunhofer diffraction due to single slit the 1 st order minimum is obtained at angle 30 0 with the incident beam. What is the width of the slit if wavelength of i

Basics of conducting materials, what is the difference between cohesive ene...

what is the difference between cohesive energy and binding eneergy

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