A magnetic wave oscillating perpendicular to the electrical wire
Explanation:
When a wire has an electrical current travelling through it, it produced a magnetic field forming concentric circles around the wire; the magnitude of the field is given by
[tex]B=\frac{\mu_0 I}{2\pi r}[/tex]
whrere:
[tex]\mu_0[/tex] is the vacuum permeability
I is the current in the wire
r is the distance from the wire
The magnetic field produced by the wire lies in a plane perpendicular to the wire itself. Moreover, the direction of the field can be found by using the right-hand rule:
- The thumb of the right hand is placed in the same direction as the current
- The other fingers, wrapped around the thumb, give the direction of the magnetic field
Therefore, the correct answer is
A magnetic wave oscillating perpendicular to the electrical wire
Learn more about magnetic fields:
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