A carbon resistor of `(47 +- 4.7) k Omega` is to be marked with rings of different colours for its identification. The colour code sequence will be

Options

A. Yellow- Green-Violet-Gold
B. Yellow-Violet-Orange-Silver
C. Violet-Yellow-Orange-Silver
D. Green-Orange-Violet-Gold

Answer

B

Explanation

Given, `R=(47 +- 4.7)kOmega = 47 xx 10^(3) +- 10%Omega`
As per the color code for carbon resistors, the colour assigned to numbers.
4- yellow
7- Violet
3-Orange.
For `+-10%` accuracy, the color is silver. Hence, the bands of colours on carbon resistor in sequence are yellow, violet, orange and silver.
Note: To remember the colour code sequence for carbon resistor, the following sentenses should be kept in memory. B B Roy of Great Britian has a Very Good Wife.