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Explain colour code to determine value of carbon film resistors, |
Answer» Solution :`RARR` colour code to determine value of carbon film resistor is SHOWN in table below.  `rArr` To remember this colour code : B B ROY Goes to Bombay Via Gate Way `rArr` First and second colour band represent tenth PLACE and unit place of resistance respectively. `rArr` Third band represent is denoted by n then it represent `10^(n)` power to number OBTAINED by first two band. `rArr` Fourth band represent tolerance value 5% or 10%. If there are only three band then tolerance value of 20% . For example , carbon resister have orange, blue, yellow and golden band. Form table forOrange = 3 Blue = 6 Yellow = 4 = n `therefore` Resistance value = `36 xx 10^(4) Omega` `rArr` Fourth band is of golden colour which indicate 5% tolerance. |
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