A v=(20+-1)w and r=(8+-2)ohm find the current with error limits

1.	A v=(20+-1)w and r=(8+-2)ohm find the current with error limits
Answer» We know that v=IR then I=V/R. After that, delta i/i = delta v/v + delta R/R . I=V/R = 20/8= 2.5A .AFTER THAT delta i/2.5 =1/20+2/8, delta i/2.5=2+10/40, delta i/2.5 =12/40, delta i= 12× 2.5/40 , then 1.5 /2 , = 0.75A .REPRESENTATION OR ERROR LIMITS : i +- delta i. , 2.5 +_0.75A .Where I/i= current , R= resistance and ,v= volt. Thanks for ask..

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