Answer:b-right
Explanation:
Given
current is flowing into the screen i.e. [tex]-\hat{k}[/tex] direction
length of wire is also in [tex]-\hat{k}[/tex] direction
Force experienced is in negative y direction i.e. [tex]-\hat{j}[/tex]
Force experienced by a current carrying wire in a magnetic field experience a force is given by
[tex]F=I\left ( \vec{L}\times \vec{B}\right )[/tex]
where I=current
L=length of element
B=magnetic field
Direction of magnetic field must be in [tex]\hat{i}[/tex]
as [tex]-\hat{k}\times \hat{i}=-\hat{j}[/tex]
