Force between two parallel current-carrying conductors

2022 Phase 2 1 question

1. Two very long, straight, parallel conductors A and B carry current of 5 A and 10 A respectively and are at a distance of 10 cm from each other. The direction of current in two conductors is same. The force acting per unit length between two conductors is: ($\mu_0=4\pi\times10^{-7}$ SI unit)