Homework Answers
Magnetic force due to i1 = q v x B = 1.6e-19*3e7*2e-7*2/0.025
= 7.68*10^-17 N towards i1
Magnetic force due to i2 = q v x B = 1.6e-19*3e7*2e-7*3/0.025
= 11.52*10^-17 N away from i2
Net force = sqrt(7.68e-17^2 + 11.52e-17^2 + 2*7.68e-17*11.52e-17*cos 120 degree)
= 1.016*10^-16 N
direction = arccot((7.68 cos 60 degree + 11.52 cos 60 degree)/(7.68 sin 60 degree + 11.52 sin 60 degree))
= 19.1 degree below -x axis
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