Current Electricity - Result Question 2

3. The color code of a resistance is given below

Yellow Violet Brown Gold

The values of resistance and tolerance, respectively, are

[2020]

(a) $47 k \Omega, 10 %$

(b) $4.7 k \Omega, 5 %$

(c) $470 \Omega, 5 %$

(d) $470 k \Omega, 5 %$

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Answer:

Correct Answer: 3. (c)

Solution:

  1. (c) According to colour coding -
Yellow Violet Brown Gold
4 7 1 $5 %$

First colour gives first digit, second colour gives the second digit and third colour gives the multiplier and fourth colour gives tolerance.

$\therefore$ Resistance,

$R=47 \times 10^{1} \pm 5 %=470 \pm 5 % \Omega$