11. A conductor when thermally heated possess large number offreely moving electron,even then no magnetic field is
Answer to some of your questions:
11)When a conductor is heated the electrons start moving in random direction, there is no one direction and thus there will be no magnetic field around this conductor.
12) The force experienced by the particle:
F = q(v X B) = qvB
mv2/r = qvB
r = mv/qB
Using the above expression, please try to plot the graph.
a) radius is inversely proportional to the charge. As the charge increases the radius decreases.
b) r is directly proportional to the energy. So, if the particle enters the magnetic field with greater energy it will describe a bigger path.
13) Lorentz force
F = qE +q(v X B)
v = v i
E = Ej
Since the particle emerges out of the region in its original direction.
FE = -FB
E = -vB
Magnitude of B = E/v
Direction of B is along the negative z axis.
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