Question

Four resistances of 16 ohms each are connected in parallel. Four such combinations are connected in series. What is the total resistance ?

Answer 1

Resultant resistances of a parallel combination of four 16 ohm resistance is

1/R = 1/16 + 1/16 + 1/16 +1/16 = 4/16

R = 4 ohm

Four such combinations are connected in series, so total resistance = 4 + 4 + 4 + 4 = 16 ohm.