The Resistance and Tolerance of a Yellow, Violet, And Red Colour Coded Resistors Respectively are

By Aina Parasher|Updated : July 13th, 2022

The resistance and tolerance of a yellow, violet, and red colour coded resistors respectively are-

  1. 47 k, 10 %
  2. 4.7 k, 10 %
  3. 4.7 k, 20 %
  4. 47 k, 20 %

Answer: C. 4.7 k, 20 %

The resistance and tolerance of a yellow, violet, and red colour coded resistors respectively are 4.7 k, and 20 %.

Solution

The resistor colour coding scheme prints coloured bands on the body of resistor to indicate the value of resistance.

In this scheme, each colour band position and colour will have a particular specification and significant value.

In the coloured band scheme, two-colour bands indicate the significant value of resistance, while the third colour band indicate the multiplier value. and fourth band if present indicates the tolerance of the resistor, if not present (or) indicated on the body of resistor, the tolerance of that resistor will be 20%. Resistor colour coding and their values are shown in below figure,

Colour 

Digit 

Multiplier 

Tolerance 

Black 

1

 

Brown 

101

1% 

Red 

102

2% 

Orange 

103

 

Yellow 

104

 

Green 

105

0.5% 

Blue 

106

0.25% 

Violet 

107

0.1% 

Grey 

108

0.05% 

White 

109

 

Gold 

 

 

5% 

Silver 

 

 

10% 

None 

 

 

20% 

Given colour coding for resistor a: Yellow→ (4)

Violet→(7)

Red→(×102)

So, resistance R=47×102=4700 =4.7 k

As there is no fourth band tolerance of resistor is 20%.

☛ Related Questions:

Comments

write a comment

Follow us for latest updates