25. •• A wire carries a current of 10 A in the +x- direction.

(a) Find the force per unit length on the wire if it is in a magnetic field that has components of Bx = 0.020 T, BY = 0.040 T, and Bz = 0.

(b) Find the force per unit length on the wire if only the field’s x-component is changed to 0.050 T.

(c) Find the force per unit length on the wire if only the field’s y-component is changed to −0.050 T.