Two long straight wires enter a room through a door. One carries a current of 3.0 A into the room while the other carries a current of 5.0 A -out. The magnitude of the path integral
o(\int )/(b)ar (B)*dvec(s)
around the door frame is:
6.3\times 10^(n)-6T*m
3.8\times 10^(n)-6T*m
2.5\times 10^(-6)T*m
6.3\times 10^(-6)T*m