KCET · Physics · Current Electricity
The colour code for a carbon resistor of resistance \(0.2 \mathrm{k} \Omega \pm 10 \%\) is
- A red, grey, brown, silver
- B red, green, brown, silver
- C red, grey, silver, silver
- D red, black, brown, silver
Answer & Solution
Correct Answer
(D) red, black, brown, silver
Step-by-step Solution
Detailed explanation
Resistance of carbon resistor,
\(\begin{aligned}
R &=0.2 \mathrm{k} \Omega \pm 10 \% \\
&=200 \Omega \pm 10 \% \\
&=20 \times 10^{1} \Omega \pm 10 \%
\end{aligned}\)
According to the colour code for carbon resistor, the colour assigned to number 2,0 and 1 are red, black and brown. For colour used for tolerance of \(10 \%\) is silver.
\(\therefore\) Colour code are red, black, brown and silver.
\(\begin{aligned}
R &=0.2 \mathrm{k} \Omega \pm 10 \% \\
&=200 \Omega \pm 10 \% \\
&=20 \times 10^{1} \Omega \pm 10 \%
\end{aligned}\)
According to the colour code for carbon resistor, the colour assigned to number 2,0 and 1 are red, black and brown. For colour used for tolerance of \(10 \%\) is silver.
\(\therefore\) Colour code are red, black, brown and silver.
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