The carbon resistor has a set of coaxial coloured rings on it which are labelled here in the figure. What is the resistance value with a tolerance value for the colour coded resistor shown in the figure.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 420 Ω ± 5%
Resistance of a given resistor (R) is,
$R=42×10^{1}±5\%$
First Band: Yellow (4)
Second Band: Red (2)
Third Band: Orange (Multiplier $10^1$)
Fourth Band: Gold (Accuracy ± 5%)