Question

Find the maximum permissible error in resistance .


Solve with steps !!

Answer 1

Heya....!!

We know that » R= v/i

( ∆R/R )max = ∆v/v + ∆i/i

here ,,, ∆v = 0.1 volt ( Least count )
∆i = 0.01 amp ( Least count )

%(∆R/R )max = [ 0.1/5 + 0.01/2] ×100 »»» 2.5 %

Value of R from the observation R = v/i = 5/2 = 2.5 Ω .

So , we can write R = ( 2.5 ± 2.5% ) Ω.


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