## lilMissMindset 2 years ago help please! the force between two long parallel conductors is 15 kg/metre. the conductor spacing is 10 cm. If one conductor carries twice the current of the other, calculate the current in each conductor. help me analyze please.

1. stgreen
2. MuH4hA

lilMissMindset: Don't ask the same question in multiple groups. "mathematics" is the wrong one anyways. -> http://openstudy.com/code-of-conduct

3. shubhamsrg

if you can tell, what is the expression of force per unit length between 2 infinite parallel current carrying wires ?

4. lilMissMindset

@MuH4hA sorry. im going to erase my other questions on other groups.

5. MuH4hA

Okay :) (although - you _should_ ask physics-question in physics... but i am no mod, so idk - guess it's ok ;) )

6. stgreen

@shubhamsrg the expression of force per unit length b/w two conductors: (F2/L)=(u0*i1*i2)/2pi*d

7. shubhamsrg

@stgreen i knew that buddy and i wanted @lilMissMindset to ans my query, ofcorse//

8. stgreen

i see

9. lilMissMindset

yea, saw it now. (F2/L)=(u0*i1*i2)/2pi*d

10. shubhamsrg

so where are you stuck..just plug in values given..cant be that difficult

11. lilMissMindset

what value should i put in 2pi*D?

12. lilMissMindset

is D the distance?

13. shubhamsrg

D is distance between the wires (in meters)

14. lilMissMindset

how about permeability? what is its unit?

15. stgreen

oops sorry µ0 = 4π×10−7 ≈ 1.2566370614…×10−6 H·m−1 or N·A−2

16. stgreen

its henry per metre

17. lilMissMindset

or newton per ampere?

18. shubhamsrg

dont worry about unit of Uo ,, just plug in everything in meters and kgs and you should get an ans in ampere..

19. shubhamsrg

all conventional units..

20. lilMissMindset

aw, sorry, im being stupid. im having trouble with the unit. :(

21. stgreen

no no you u0 is in newton per ampere square..while the force you have is in Kg..convert your force in newtons first

22. shubhamsrg

i see..yes ,you have to convert that.. use mg = F for that conversion..

23. lilMissMindset

aww. thank you so much! at last, i get this problem. :)

24. lilMissMindset

@MuH4hA i got an answer in the mathematics group.

25. stgreen

MATHS section got a number of engineers too lady :P

26. lilMissMindset

yea, that is why i put my questions in multiple groups, hoping for answers. not knowing, it is wrong according to codes of conduct. im one guilty student.

27. stgreen

uh-oh come on...its not such a CRIME lol

28. lilMissMindset

right. lol

29. lilMissMindset

thanks again. ;)