Question

Three resistors of 1 ohm , 2 ohm and 3 ohm are connected in Parallel. The combined Resistance of the three resistors should be....​

Answer 1

Explanation:

for parallel combined resistance

$\frac{1}{r} = \frac{1}{r1} + \frac{1}{r2} + \frac{1}{r3} \\ \frac{1}{r} = 1 + \frac{1}{2 } + \frac{1}{3} \\ \frac{1}{r} = \frac{6 + 3 + 2}{6} \\ \frac{1}{r} = \frac{11}{6} \\ thus \: \: \: \: \: \: \: \: \: r \: = \frac{6}{11} ohm$