If 400 Ω of resistance is made by connecting four 100 Ω resistances of tolerance 5 % in series, then the tolerance of the combination is

Question

If 400 Ω of resistance is made by connecting four 100 Ω resistances of tolerance 5 % in series, then the tolerance of the combination is (A) 5 % (B) 10 % (C) 15 % (D) 20 %

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/a966449cf9cb3537efdd7f7c09c2a1ac-.jpeg" /> R=100 ± 5 % 4R=400 ±20 % Tolerance of combination is also 5 %.

Q. If $400 Ω$ of resistance is made by connecting four $100 Ω$ resistances of tolerance $5%$ in series, then the tolerance of the combination is

$5%$

$10%$

$15%$

$20%$

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

Q. If 400Ω of resistance is made by connecting four 100Ω resistances of tolerance 5% in series, then the tolerance of the combination is

5%

10%

15%

20%