Current-carrying loop and the Lorentz force
Answers are for parents and teachers.
1
q = 3 C, v = 5 m/s, B = 2 T. F in N?
30
2
F = 12 N, q = 2 C, B = 3 T. v in m/s?
2
3
An electron with v = 4·10⁷ m/s in B = 0.5 T. F in pN? (e = 1.6·10⁻¹⁹ C)
3.2
4
Explain the structure of an ammeter in 3 sentences.
A coil sits between the poles of a permanent magnet; a spring holds it; when current flows the coil turns and the pointer deflects by an angle matching the current.
5
How are the Lorentz force and the Ampère force related?
The Ampère force is the sum of Lorentz forces on the moving charges in the conductor.