✔ 最佳答案
1. Let θ be the angle be the magnetic field lines and the straight conductor,
B be the flux density, I be the current in the conductor and L be the length of the conductor.
The force acting on the conductor F is:
F = B.L.I.sin(θ) = 0.2x2x1.sin(30) N (just take θ=30 deg. for example)
thus F = 0.2 N
substite the value of θ for other angles.
2. Let θ be the angle between v and B, then the Lorentz force F is given by:
F = q.v.B.sin(θ)
where q is the charge
when θ=30 deg. F = 1.6x10^-19x1.2x10^7x0.02.sin(30) N
use the the same equation to calculate θ=60 deg.