Physics for IGCSE & O level - Electricity (Section 1 - No. 39)
What is the equivalent resistance of two 2-ohm resistors connected in parallel?
1 ohm
2 ohms
4 ohms
8 ohms
คำอธิบาย
In parallel, equivalent resistance is R/n if resistors are equal: 2/2 = 1 ohm.