the direction of the magnet. ent a the The of of hi the magnetic of magnet, coil

Question

the direction of the magnet. ent a the The of of hi the magnetic of magnet, coils. field magnet dipol iPad 4:28 PM loncapa.gwu.edu LON-CAPA 22.68-More Applicatio... Awkward. (Season 4) IEp. 12 IFinals l... Michelle Garcia (Student) Phy 212 FA2014 Messages Courses Help Logout Main Menu l Contents l Grades l s course contents Hws O Trmer Notes Evaluate Feedback e Print o info The figure below shows a long straight wire just touching a loop carnying a current li. Both lie in the same plane. What direction must the current I2 n the straight wire have to create a field at the center of the loop in the direction opposite to that created by the loop? Use the compass rose to specify the direction. NE Direction of the current is what is the ratio of I1/12 that gives zero field strength at the center of the loop? Submit Answer Tries 0/10 what is the direction of the field directly above the loop under this circumstance? Field above loop Submit Answer Tries 0/10 Post Discussion

Explanation / Answer

1) direction should be (SW) <<<<<<<<<<<<<

2) Uo I1 / (2R) = Uo I2 / (2pi R)

so I1 = I2 / pi

so I1 / I2 = 1/pi <<<<<<<<<<<<<<

3) direction is into page <<<<<<<<<<<<<<<<

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