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  4. The value of the resistance of a carbon resistor having the standard colour-coding as shown in the figure is n GΩ ±5 % . What is the value of n ? <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-hkjx1v6ayjv6.png />

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Q. The value of the resistance of a carbon resistor having the standard colour-coding as shown in the figure is $n \, G\Omega \pm5\%$ . What is the value of $n$ ?

Question

NTA AbhyasNTA Abhyas 2020Current Electricity

Solution:

From colour codes for resistors.
$R=21\times 10^{8}\Omega \pm5\%$
$R=2.1\times 10^{9}\Omega \pm5\%$
$\Rightarrow R=2.1G\Omega \pm5\%$
$n=2.1$