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Byju's Answer
Standard XII
Physics
Colour Coding of Resistors
A resistor is...
Question
A resistor is marked with colours red, red, orange and gold. Write the value of its resistance.
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Solution
First band represents the first significant figure of resistor value.
Second band represents the second significant figure of resistor value.
Third band represents the decimal multiplier after the first-two significant figures of resistor value.
Fourth band represents the tolerance of resistor.
According to colour code : red (2) orange (3) gold (5 %).
Thus resistance value is
22
×
10
3
±
5
%
Ω
.
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