Physics for IGCSE & O level - Electricity (Section 12 - No. 9)
What is the combined resistance of two 10-ohm resistors in parallel?
5 ohms
10 ohms
15 ohms
20 ohms
คำอธิบาย
For equal resistors in parallel, the total is the value of one divided by the number of resistors (10/2 = 5 ohms).