A carbon resistor has bands of different colors on its body as mentioned in the figure . The value of resistance is ?

1 ) A carbon resistor has bands of different colors on its body as mentioned in the figure . The value of resistance is . . . . . . . . . : -

Choose single option from these following : -

A ) 920 Ω ,                                                 B ) 2.1 k Ω ,

C ) 13 k Ω ,                                                D ) None of these ,

Correct Answer : -   A ) 920 Ω ,

Solution : -

2 ) The color sequence in a carbon resistor is red , brown , orange and silver . The resistance of the resistor is . . . . . . . . . . : -

Choose single option from these following : -

A ) 21 k Ω ,                                                B ) 28 k Ω ,

C ) 1.3 k Ω ,                                                D ) None of these ,

Correct Answer : -   A ) 21 k Ω ,

Solution : -

Significant figures : -		Multiplier : -	Tolerance : -
Red	Brown	Orange	Silver
2	2	10^3	± 10 %

So ,  R = 21 x 10^3  ± 10 %  ,

R = 21 k Ω  ,   Answer .

 

3 ) Resistances of carbon resistance which has bands color brown , black and brown . . . . . . . . . . : -

Choose single option from these following : -

A ) 10 Ω  ,                                                            B ) 100 Ω  ,  

C ) 1 k Ω  ,                                                           D ) None of these ,

Correct Answer : -   B ) 100 Ω  ,  

Solution : -

Significant figures : -		Multipliers : -
Brown	Black	Brown
1	0	10^1

So ,  Resistance = 10 x 10^1  Ω  .

Resistance  =  100 Ω  ,   Answer .

 

4 ) The color codes of resistors : -

Color : -	Values : -
Black	0
Brown	1
Red	2
Orange	3
Yellow	4
Green	5
Blue	6
Violet	7
Gray	8
White	9