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    Resistor Colour Code - Practice Questions & MCQ

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

    Quick Facts

    • 17 Questions around this concept.

    Solve by difficulty

    Carbon resistors used in electronic circuits are marked for their value of resistance and tolerance by a colour code. A given resistor has colour scheme brown,red,green and gold. Its value in ohms is

    A carbon resistor has the following color code. What is the value of resistance?

    A resistance is shown in the figure. Its value and tolerance are given respectively by :

    The colour coding on a carbon resistor is shown in the given figure. The resistance value of the given resistor is:

    The value of a resistor with colour Brown, black and gold is

    The value of a resistor with colour Orange, red, brown is

    A resistance of unknown value connected across a 45 V supply gives 1 mA current. The color code of the resistor is 

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    The digit 8 in colour code of a resistance is represented by 

    The tolerance of a resistance is given as 0.1%. which colour represents this tolerance 
     

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    Concepts Covered - 1

    Colour coding of Resistance
    1. Colour coding of Resistance

    The carbon resistance has normally four coloured rings bands $A, B, C$ and $D$.

     

    Colour bands A and B Indicates the decimal figure.

    Colour band C Indicates the decimal multiplier.

    Colour band D Indicates the tolerance in per cent about the indicated value. Tolerance represents the percentage accuracy of the indicated value.

    • To remember the sequence of colour code 

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    Tolerance of Gold is $\pm 5 \%$
    Tolerance of Silver is $\pm 10 \%$
    Tolerance if no colour $\pm 20 \%$

     

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    Colour coding of Resistance

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