1.

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

Answer»

GREEN - Orange - Violet - Gold
Violet - Yellow - Orange - Silver
Yellow - Green - Violet - Gold
Yellow - Violet - Orange - Silver

SOLUTION :Yellow - Violet - Orange - Silver
R = `(47 pm 4.7) xx 10^(3) Omega`
= `(47 xx 10^(3) pm 4700) Omega and (4700 xx 100)/(47000)= 10%`
`= (47 xx 10^(3) pm 10% ) Omega`
From colour code, `4 RARR` yellow, 7 `rarr` violet , 3 `rarr` orange, 10 % for gold.


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