In the figure below, there is a current I flowing in a counterclockwise directio
ID: 2260542 • Letter: I
Question
In the figure below, there is a current I flowing in a counterclockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, what is the net magnetic force acting on the loop?
In the figure below, there is a current I flowing in a counterclockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, what is the net magnetic force acting on the loop?Explanation / Answer
The force on a current carrying conductor of length L in mag. field B is given by
F=iLxB
So force on top and bottom arms=0 as current flows in same directionas B. So cross procuct is 0.
Force (on right arm)=iLB (into the plane)
Force (on left arm)=iLB (out of the plane)
So net F=0 (as they are in opp. directions)