Question

Four resistors of resistances 1 ohm, 5 ohm, 3 ohm and 4 ohm are connected in parallel. Calculate the value of the combined resistance.

Answer 1

Explanation:

$= > \frac{1}{r} = 1 + \frac{1}{5} + \frac{1}{3} + \frac{1}{4} \\ = > \frac{1}{r} = \frac{60 + 12 + 20 + 15}{60} \\ = > \frac{1}{r} = \frac{107}{60} \\ = > r = \frac{60}{107} \\ = > r = 0.56 \: ohm$