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Grade 11Engineering Entrance Exams

If 400 ohm of resistance is made by adding four 100 ohm resistances of tolerance 5%, then the tolerance of the combination is

Profile image of Jayant Kumar
12 Years agoGrade 11
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3 Answers

Profile image of Saurabh Koranglekar
6 Years ago
Dear student

The answer is 5%

Regards
Profile image of Arun
6 Years ago
Each 100 ohm resistance have tolerance of 5%. i.e. 5 ohm.
Total tolerance of 4 such resistances is 4 × 5 = 20 ohms.
Total resistance of combination is 4 × 100 = 400 ohms.
Tolerance of the combination will be -
Tolerance = 20 / 400 × 100 %
Tolerance = 5 %
Therefore, tolerance of the combination will be 5 %.
Profile image of Vikas TU
6 Years ago
Total tolerance of 4 such resistances is 4 × 5 = 20 ohms. Total resistance of combination is 4 × 100 = 400 ohms. Therefore, tolerance of the combination will be 5 %.

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