There is a long straight wire carrying current I = 507 amperes. At a distance of 1.3 meter away, a small piece of wire (length 1 cm) carries a current of 13 amperes in a direction parallel to the long wire.
(a) Calculate the value of the B field generated by the long wire at the position of the small wire.
(b) Using your result for B just found, calculate the force on the small wire.