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The four bands of a colour coded resistor are of the colours gray, red, gold and gold. The value of the resistance of the resistor is
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The correct answer is:
$8.2 \Omega \pm 5 \%$
Colours in sequence,
Gray $\rightarrow 8 \quad$ (1st digit)
Red $\rightarrow 2$ (2nd digit)
Gold $\rightarrow 0.1$ (Multiplier)
Gold $\rightarrow \pm 5 \%$ (Tolerance)
$\Rightarrow(82 \times 01) \pm 5 \% \Rightarrow R=8.2 \Omega \pm 5 \%$
Gray $\rightarrow 8 \quad$ (1st digit)
Red $\rightarrow 2$ (2nd digit)
Gold $\rightarrow 0.1$ (Multiplier)
Gold $\rightarrow \pm 5 \%$ (Tolerance)
$\Rightarrow(82 \times 01) \pm 5 \% \Rightarrow R=8.2 \Omega \pm 5 \%$
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