basic magnetism on square loop question?

by helpmeplz!
Tags: basic, loop, magnetism, square
helpmeplz! is offline
Apr30-12, 09:22 PM
P: 24
A square loop carrying a current I creates its own magnetic field. Describe the forces on each side of the square loop due to its own field. What is the torque it experiences?

My question is this. I know we can use bio savart. But for bio savart, B=uoI/2piR, what R do I use? suppose i have a square loop, the adjacent sides do create B fields that the other experiences, but if they are two consecutive sides, their distance apart is 0? Please someone help me out!!
Phys.Org News Partner Physics news on
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser
mfb is offline
May1-12, 09:00 AM
P: 10,813
You have to integrate over the lines, using the distance between the point where you want to calculate the field and the point where your integral "is".

Register to reply

Related Discussions
Control open loop basic question Engineering, Comp Sci, & Technology Homework 8
Question regarding force on a square loop due to a magnetic field Introductory Physics Homework 3
basic square root question Precalculus Mathematics Homework 3
Very basic magnetism question Introductory Physics Homework 2
Very basic magnetism question Introductory Physics Homework 2