Physics for IGCSE & O level - Electricity (Section 6 - No. 15)
If two resistors are connected in series, and one resistor is 10 ohms and the other is 20 ohms, what is the total resistance?
10 ohms
20 ohms
30 ohms
200 ohms
คำอธิบาย
In series, the total resistance is the sum of the individual resistances (10 + 20 = 30).