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NEET 2023
Exam
NEET
Year
2023
Subject
Physics
Chapter
Current Electricity

NEET 2023 · Physics · Current Electricity

Resistance of a carbon resistor determined from colour codes is (...

Resistance of a carbon resistor determined from colour codes is (22000±522000 \pm 5 %) ΩΩ. The colour of the third band must be :

Options

  1. AYellow
  2. BRed
  3. CGreen
  4. DOrange

Correct answer

D. Orange

Step-by-step solution

Resistance using the colour codes is written as
R=[(numbers)×(multiplier) ±(tolerance(%))].

Colour 1: First significant figure
Colour 2: Second significant figure
Colour 3: Decimal multiplier
Colour 4(or no colour): Tolerance

For the given case:

Resistance can be written as = \left[\left(22 \times {10}^{3}\right) \pm 5 %\right]Ω.

Colour of the third band corresponds to decimal multiplier which is 103{10}^{3}, hence colour is Orange.

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