Question

find resistance between A and B

Answer 1

let resistance between And B be R ohms
according to question -
1/R= 1/2+2 + 1/4
1/R= 1/4+1/4
1/R=2/4
1/R=1/2
R= 2 ohms
EXPLANATION --- THE TWO 2 OHM RESISTANCE ARE IN SERIES. SO THERE EQUIVALENT RESISTANCE IS 4 OHMS. THE TWO 2 OHM RESISTORS ARE IN PARALLEL TO THE 4 OHM RESISTORS .