Tag: Specialty Wire

Questions asked in Physics Viva Voce for Class 12 Physics Practical

Double Folded Resistance coil

Q1. Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,2000,5000 etc? Ans: In this arrangement all natural numbers upto 10000 ohms (and above) can be realized. 1, 2, 2+1=3,2+2=4,5,5+1=6,5+2=7,5+2+1=8,5+2+2=9 etc Try it yourself to get all numbers from 1 to 10000 Q2. Why wire is double folded in resistance box? Ans: The …

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