(b) The net magnetic force on the wire in unit-vector notation if the magnetic field is 4.0 T is zero
Since the field and current are in same direction.
17. A planar coil of wire has a single turn. Thenormal to this coil is parallel to a uniform and constant (in time)magnetic field of 1.7 T. An emf that has a magnitude of 2.6 Vis induced in this coil because the coil's area A isshrinking. What is the magnitude of ? A/? t, whichis the rate (in \(m^2/s\)) at which the area changes?