is magnetic field line have speed. if yes then what is the speed of magnetic field lines?
Answers
Answer:
A magnetic field propagates at the speed of light. If in your case the magnets move much slower than light and are close then you can ignore propagation delay. If not you have to take into account the momentum of the time dependent, propagating electromagnetic field besides that of the magnets
Explanation:
Explanation:
ANSWER
(i) Let
B
=B
0
(−
K
^
)
V
=V(−
x
^
)
Electromagnetic force F
m
=q
V
×
B
=qVB(−
j
^
)
Now we can conclude that point charge move on circular motion of radius r=
qB
mV
and motion of charge in X−Y plane.
(ii) If point charge has velocity component parallel to
B
then, In this case path followed by charge particle is helical path.
(iii) If electric field is also applied such that the particle continuous moving along straight line the electromagnetic force should be balanced by electrostatics force F
e
F
m
=qVB(−
j
^
)
If net force on q is zero.
F
e
=qV
j
^
q
E
=qVB(
j
^
)
E
=VB(
j
^
)