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DUMET Medical DUMET Medical Solved Paper-2008

  • question_answer
    If the colour code of carbon resistor is as follows, then give the value of its resistance in\[\text{k}\Omega \].  Colour of I strip - yellow  Colour of II strip - blue  Colour of III strip - orange  Colour of IV strip - gold

    A)  \[46\pm 5%\]       

    B)  \[0.46\pm 5%\]

    C)  \[46\pm 10%\]      

    D)  \[0.46\pm 10%\]

    Correct Answer: A

    Solution :

     Colour coding for carbon resistors is as follows
    Letters Colors Figure A, B Multiplier
    B Black 0 \[{{10}^{o}}\]
    B Brown 1 \[{{10}^{1}}\]
    R Red 2 \[{{10}^{2}}\]
    O Orange 3 \[{{10}^{3}}\]
    Y Yellow 4 \[{{10}^{4}}\]
    G Green (gold) 5 \[{{10}^{5}}\]
    B Blue 6 \[{{10}^{6}}\]
    V Violet 7 \[{{10}^{7}}\]
    G Grey 8 \[{{10}^{8}}\]
    W White 9 \[{{10}^{9}}\]
    Therefore, the value of carbon resistor \[=(46\times {{10}^{3}}\pm 5%)\,\Omega \] \[=(46\pm 5%)\,k\Omega \]


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