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

Explain newton''s first law of motion, NEWTON'S FIRST LAW OF MOTION: Th...

NEWTON'S FIRST LAW OF MOTION: This law states that "A body at rest will remain at rest and a body moving with uniform velocity will carry on doing so, until acted on by some un

Evaluate with the magnitude of the force exerted on particle, Questions: ...

Questions: Regard as two charged particles at a separation of 4 cm. Particle #1 has a charge of +2 micro-coulombs. Particle #2 has a charge of +16 micro-coulombs. How does the

Carnots theorem, Carnot's theorem (S. Carnot) The theorem which states...

Carnot's theorem (S. Carnot) The theorem which states that no engine operating among two temperatures can be more capable than a reversible engine.

Dielectric, how dielectric mat is used for high voltage safety ? how it wor...

how dielectric mat is used for high voltage safety ? how it works?

Kerr effect, Kerr effect (J. Kerr; 1875): The ability of certain subst...

Kerr effect (J. Kerr; 1875): The ability of certain substances to refract light waves differently whose vibrations are in distinct directions while the substance is placed wit

Energy conservation on an incline, Energy Conservation on an Incline In...

Energy Conservation on an Incline In the given case of the cart rolling down predispose and there are three external forces (the general force, the force of friction and air re

Microprocessor, Microprocessor A combination of IC's cal led a micropr...

Microprocessor A combination of IC's cal led a microprocessor. The data is processed in the microprocessor according to the instructions given through the input devices.  A

Synaptic normalization mechanism, Diagram of the network looks: (b)...

Diagram of the network looks: (b) When both x and y are large, i.e., both A and B are firing, w is increasing without bound. When one or both of x and y are small, w does n

Parallel forces, Examples of like and unlike parallel forces?

Examples of like and unlike parallel forces?

Define wave function, It is a mathematical explanation of the disturbance p...

It is a mathematical explanation of the disturbance prepared by a ray. For a string, the wave function is a distance for sound rays. It is a density or pressure fluctuation while f

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