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20/07/2021 5:12 pm
Topic starter
ou are given three resistances of 1, 2 and 3 ohms. Show by diagrams, how with the help of these resistances you can get:
(i) 6 Ω
(ii) 6/11 Ω
(iii) 1.5 Ω
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20/07/2021 5:14 pm
(i) figure.png
Equivalent resistance = 1Ω + 2Ω + 3Ω
= 6Ω
(ii) figure.png
Equivalent resistance
\(\frac{1}{R}\) = \(\frac{1}{1}\) + \(\frac{1}{2}\) + \(\frac{1}{3}\)
= \(\frac{6+3+2}{6}\) = \(\frac{11}{6}\)
(iii) figure.png
Equivalent resistance of first line
= 1Ω + 2Ω = 3Ω
Resistance of the second line = 3Ω
Equivalent resistance
\(\frac{1}{R}\) = \(\frac{1}{3}\) + \(\frac{1}{3}\) = \(\frac{2}{3}\)
R = \(\frac{3}{2}\) = 1.5Ω