First slide

Colour code

Question

A carbon resistor of $(47 \pm 4.7) k Ω$ is to be marked with rings of different colours for its identification. The colour code sequence will be

Easy

A

Violet - Yellow - Orange - Silver
B

Yellow - Violet - Orange - Silver
C

Yellow - Green - Violet - Gold
D

Green - Orange - Violet - Gold

Solution

$(47 \pm 4.7) k Ω = 47 \times 10^{3} \pm 10 % Ω$
$∴$ Yellow - Violet - Orange - Silver

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