2023 · Q64
Three resistors of resistances 11 ohms, 22 ohms and 33 ohms are connected in parallel. Thier equivalent resistance is equal to
General KnowledgePhysics
- A66 ohms
- B22 ohms
- C12 ohms
- D6 ohms
Explanation
For parallel resistors, 1/R = 1/11 + 1/22 + 1/33 = (6 + 3 + 2)/66 = 11/66 = 1/6, so R = 6 ohms. The equivalent resistance of a parallel combination is always smaller than the smallest individual resistance, which rules out 66, 22 and 12 ohms.