1.

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 beA. Yellow- Green-Violet-GoldB. Yellow-Violet-Orange-SilverC. Violet-Yellow-Orange-SilverD. Green-Orange-Violet-Gold

Answer» Correct Answer - B
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.


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