Question

OPM / Remaining 20 min FULL SCREEN PRINTER VERSION « BACK Pool 21.2: Four parallel wires that are long and straight are positioned as... Four parallel wires that are long and straight are positioned as shown. Two of the wires carry currents that are directed outward, and two of the wires carry currents that are directed inward. All four currents have equal magnitude. Which one of the following phrases best describes the direction of the net magnetic force acting on the wire shown in the lower center? X X vertically upward vertically downward outward inward The net force on the wire is zero newtons. By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor

Answer 1

when the warent in the parallel wires flows in the same direction, there is an attractive force between the two wires. If the current in the parallel wires Hows in the opposite direction, then there is a sepulsive force between the two wires. the lower left wire and lower right wire care at equidistance from the lower center wire and the cements flowing through those wires are equal. so, the magnetic force produced by these two wires on the lower center wire gets cancelled. Efence, there is a magnetic force acting on the lower center wire only due to upper wire. nhe currents flowing through these two coines are in esame direction. Hence, there is an attractive force between these two wires, therefore, the direction of the magnetic force acting on the lower cender wire to vertically upward.