question_answer

If \[400\Omega \]of resistance is made by adding four \[100\Omega \] resistances of tolerance 5%, then the tolerance of the combination is:     AIEEE  Solved  Paper (Held On 11 May  2011)

A)  5%                

B)  10 %              

C)  15 %              

D)  20 %

Correct Answer: A

Solution :

                                \[R=100\pm 5\] \[4R=400\pm 20\] Tolerance of combination is also 5%.