Current Electricity Ques 29
29. The color code of a resistance is given below
The values of resistance and tolerance, respectively, are
(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: 29.(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,
$R=47 \times 10^{1} \pm 5 \%=470 \pm 5 \% \Omega$
BETA
