Three resistors of 2, 3, and 6 ohms are connected in parallel. What is the total resistance?

Correct answer to question 128 (Electronics Information): 1 ohm

Method

Adding the reciprocals: 1/2 + 1/3 + 1/6 = 3/6 + 2/6 + 1/6 = 1, so the total resistance is 1 ohm, lower than the smallest branch.