Question

Four electric currents, equal in magnitude are arranged at the corners of a square as shown in the figure. b a Two currents go into the page, and two are pointing out of the page. Point a is at the center of the square, and points b and c are in the middle of two of the sides. What is the direction of the magnetic field at point a? To the left. To the right. Down (to the bottom of the page). Up to the top of the page). The magnetic field is zero at this point. Submit Answer Tries 0/3 What is the direction of the magnetic field at point b? The magnetic field is zero at this point. Up (to the top of the page). To the right. To the left. Down (to the bottom of the page). Submit Answer Tries 0/3 What is the direction of the magnetic field at point c? Down (to the bottom of the page). To the left. Up (to the top of the page). The magnetic field is zero at this point. To the right. Submit Answer Tries 0/3

Answer 1

2 point a ol to Huno-zt 3 ffnet to Fi Since are All forces 95 zero zero at this point. equal. So, Magnetic field Pomtb Fnet PEARE2F) -Net force (To the up) =F Fret? 25 - (2FSine) 2F( 1-sing) >0 up to top of page: - S2 And pointe x 5 + (To the right) Ener=126 - 2Fcose). Free 2F (1-сoso) so Ane To the right