JAMB - Physics (1984 - No. 42)
What is the resistance of the circuit shown above
4Ω
11Ω
19/5Ω
17/4Ω
8Ω
解释
from the diagram, 2ohms and 2ohms are parallel, then total resistance = 1ohms
1ohms, 3ohms and the 4ohms are in series
then total resistance = 1 + 3 + 4 = 8ohms.