Electronics and Communication Engineering - Materials and Components - Discussion

2. 

The colour code on a carbon resistor is red-red-black-silver. The value of resistor is

[A]. 22000 Ω
[B]. 2200 Ω
[C]. 22 ± 5% Ω
[D]. 22 ± 10% Ω

Answer: Option D

Explanation:

No answer description available for this question.

Ali said: (Apr 6, 2014)  
Please explain color coding system?

Thanu said: (Feb 13, 2015)  
Color code is like BBROYGBVGW.

We used say as : BB ROY Great Britain Very Good Wife.

Black=0.
Brown=1.
Red=2.
Orange=3.
Yellow=4.
Green=5.
Blue=6.
Violet=7.
Gray=8.
White=9.

None=+or-20%.
Silver=+or-10%.
Gold=+or-5%.

So red=2, red=2, black=0, silver is 10%.

First color is digit.
Second color is digit.
Third color is power of ten.
Fourth color is tolerance.

22*10^0/+or-10%.

So answer is 22+or-10%.

Raghav said: (Jul 14, 2016)  
You can learn it by using the simple code: BB ROY GREAT BRITTEN VERY GOOD WIFE.

Priti said: (Apr 17, 2018)  
Black, brown, red, yellow, green, blue, voilet, gray, white and tolerance gold silver no colour are respectively 5, 10, 20 %.

Trupti said: (May 3, 2018)  
Thanks @Thanu.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.