Register to reply

How to calculate the magnetic field and pull force generated by current?!

by Momento
Tags: current, field, force, generated, magnetic, pull
Share this thread:
Momento
#1
Jul4-12, 12:11 AM
P: 55
Hallo all,


I've been looking around to find the best way to calculate the magnetic field generated by current flowing through copper wire... There were many sites I've found but its kinda confusing

One of the laws:

I thought it was simple to determine the magnetic field... Is there a way to calculate the pull force as well?!

Thanks in advance!
Phys.Org News Partner Physics news on Phys.org
Mapping the optimal route between two quantum states
Spin-based electronics: New material successfully tested
Verifying the future of quantum computing
Nessdude14
#2
Jul4-12, 01:27 AM
P: 172
The strength of the magnetic field around a long, straight wire is:
[itex]\Large B=\frac{μ_{0}I}{2\pi r}[/itex]
B is the magnetic field in Tesla, μ0 is the permeability constant (1.26*10-6 T m/A), I is current in Amps, and r is distance from the wire in meters.
The direction of the field is given by the following "right-hand rule":


When you want to calculate for a wire that's not perfectly straight, this equation isn't valid, and you must use integration to account for an odd-shaped wire.
Momento
#3
Jul4-12, 02:18 AM
P: 55
Quote Quote by Nessdude14 View Post
The strength of the magnetic field around a long, straight wire is:
[itex]\Large B=\frac{μ_{0}I}{2\pi r}[/itex]
B is the magnetic field in Tesla, μ0 is the permeability constant (1.26*10-6 T m/A), I is current in Amps, and r is distance from the wire in meters.
The direction of the field is given by the following "right-hand rule":


When you want to calculate for a wire that's not perfectly straight, this equation isn't valid, and you must use integration to account for an odd-shaped wire.
Thank you so much for that!

I'm looking up for more equations because most probably I'll make a series of looped wires and tie the together...


Register to reply

Related Discussions
Force of a magnetic field on a current Introductory Physics Homework 2
What ACTUALLY causes a magnetic field to be generated when there is a current? Classical Physics 41
Force required to pull loop from magnetic field Introductory Physics Homework 15
Magnetic field generated by current in semicircular loop at a point on axis Advanced Physics Homework 4
Magnetic field generated by a circular current loop Classical Physics 12