Answer
given,
force per unit length = 350 µN/m
current, I = 22.5 A
y = y = 0.420 m



I₂ = 32.67 A
distance where the magnetic field is zero


there the distance at which the magnetic field is zero in the two wire is at 0.248 m.
What happens when you pour water in a glass? It takes the shape of the glass. This means that water can't have a fixed shape or volume
Then the force will also be doubled