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