In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a 15.0 cm. Each wire carries 7.00 A, and the = currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3. In unit-vector notation, what is the net magnetic force per meter of wire length on wire 4? ☐ a -x Number i i <>> ĴUnits î +

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying mag…