Electronics - Voltage and Current - Discussion

Another remembering procedure is:

B B ROY Good Boy Very Good Wife Good Son No problem.

Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
violet 7
Gray 8
White 9
Gold 5%
Silver 10%
Noring 20%

And for determining the colour coding of a resistor you need to remember the formula :

That is :-

ab*10^c+-tolerance.

Some important points to remember :

> Each resistor has a tolerance ring. Generally they have golden or silver ring for this purpose.

> Sometimes other colours are also used for tolerance.

> The value of a carbon resistor may be obtained by looking at the coloured rings painted on it. Each colour has a numerical value.

> Hold the resistor such that the tolerance ring is on your extreme right. Now take the values of the resistor.

Color code for a 220 omega 5% resistor?
Resistor colour coding series:

Tolerance

Black 0 10^0
Brown 1 10^1
Red 2 10^2
Orange 3 10^3
Yellow 4 10^4
Green 5 10^5
Blue 6 10^6
Violet 7 10^7
Gray 8 10^8
White 9 10^9
None 20%
Silver 10%
Gold 5%

Therefore Red, Red, Brown, Gold
2 2 10^1 5%

= 22 x 10 = 220 ohm 5% (tolerance).

Consider the color series in the resistor from opposite of the tolerance color like gold, silver.

In color series value of red is 2 and value of brown is 1. In resistor take a first two values must be same and the third value, we should be taken as power of 10. In question the 5% is denoted so it is gold.

So, by option A) 2*2*10^1=220. unit of the resistance is ohm. therefore 220 ohm 5%. implies that option [A] is the correct.

In resistor colour coding series
e.g:- 220 5%
1st&2nd are normally digit & 3rd is multiplier which is power of 10.
So for this case 220 %5
=22*(10)^1 5%
here 10 to power 1 so we use brown
if 10 to power o so we use black =22 ohm

B B ROY Goes to Bombay in a Via Gate Way.

Consentrate in all capital letters.

B B R O Y G B V G W
BLACK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GREY WHITE
0 1 2 3 4 5 6 7 8 9

Resistor colour coding series:

Black 0
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Blue 6
Violet 7
Gray 8
White 9
None 20%
Silver 10%
Gold 5%

This is right color coding.

We read "B B ROY of Great Britain Visited Gate Way of India".

1st 2 digits are digits 2 & 2.

3rd is multiple. For brown (1) it is 10 to the power 1.

So it is 22x10 = 220.

From which side, we should start to see the colors in RESISTORS for saying the color coding properly? can you say any identification to take any color as first color?

Ya this is correct sequence and a way of remembering is

B B R O Y GREAT BRITEN VERY GOOOD WIFE.

The 1st alphabet of the every word or letter indicating.

We take brown as 10^1, because we take this according to colour coding. In colour coding brown is 10^1. This is correct.