Magnetsim??

A wire of length l has current i
apply amperes law

∫B.dx=μi
B.2pir=μi

B=μi/2πr ...(:P same as of infinite wire.)

But we know it should be

B=μi(sinα+sinβ)/4πr

Explain what is wrong..
[3]

5 Answers

21
tapanmast Vora ·

is statement mein sayad

B.2pir=μi

coz u gotta select crrct amperian loop of uniform charg distrinuition effect to get gud results

1
Aditya ·

see this>>>http://targetiit.com/iit_jee_forum/posts/highly_conceptual_2457.html

1
Aditya ·

And see my explanation there.....n pls tell me if i m correct

33
Abhishek Priyam ·

opsie this was dioscussed..

But i think wrong post is pinked there.. post#3 is wrong

post#13 is correct

1
Aditya ·

Yes...thanks!

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