Question

Find current in each branch.

Answer 1

current=v/r=4/2=2 A

hope it helps you

Answer 2

$1.current = \frac{v}{r} \\ i = \frac{4}{2} \\ i = 2A$

$2.R = 2 + 2 = 4 \\ i = \frac{2}{4} \\i = \frac{1}{2} A$

$3.R = 2 + 2 = 4 \\ i = \frac{2}{4} \\i = \frac{1}{2} A$