 #1
LCSphysicist
 636
 153
 Homework Statement:

a cable infinite and very thin that carries current and has charge density
null in the reference of fixed positive charges, in addition, consider a
charge particle q positioned at a distance l from the cable and traveling
in parallel direction to the cable with the same speed (relativistic) u
of the electrons in the cable.
 Relevant Equations:
 .
There are some question involving the statement. One of them is about the charge density in S' frame. It asks to calc it.
I thought that i could calculate the electric field in the referencial frame S' and, then, use the formula
$$ E = \lambda / 2 \pi \epsilon l $$
In that way, i would obtain ##\lambda##. Is that a reasonable way to find the charge density? Is there another way?
I thought that i could calculate the electric field in the referencial frame S' and, then, use the formula
$$ E = \lambda / 2 \pi \epsilon l $$
In that way, i would obtain ##\lambda##. Is that a reasonable way to find the charge density? Is there another way?
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