Question

What is the direction of a current that experiences the magnetic force shown in each of the three cases in the figures below, assuming the current runs perpendicular to B? (a) ...Select (b) Select (c) X X X х X X X X X --Select-

Answer 1

Solh Soln Since magnetic field B² Bo and Fora F = Fj The dř= I cdł x B). corrent element should be along negative sc axFq ie along i b) Since AF B Bix alory xaxis Force Ê = I cê x B²) L e in along current I. OI Fix alory yaxu. The current must be along positive z axix re along & c) Magnetic field in dorg negative Z axiñ and Force along my native so_current must be alory positiva it x axit I, d axit I 2) Current in along yaxis Force in along negative xaxis, along magnetic field B should be negative z axix ♡ B. F

Since Force Fin. in along negative z axis (orrent I along negative yaxin magnetic field should be along B. JI negative y direction Sina TI Force ix along positive yaxin current I ix long negative xanis, magnetic field B must be along positive o B. I z axi).