What is the equivalent resistance of the two resistors in the circuit shown?

Explanation

1. 01

   The resistors are in parallel: 1/R = 1/6 + 1/3 = 1/6 + 2/6 = 3/6 = 1/2.

2. 02

   So R = 2 Ω. A parallel combination is always smaller than its smallest resistor.