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Magnetism

Blazing goIITian

Joined:	31 Jan 2007
Post:	515

1 Jul 2007 19:31:51 IST

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446

semi circle conductor!(rates for sure)!

None

a straight conductor is bent in the form of a semi circle of radius r.if the field due to it is B what is the current through it

i know its very simple but there are 2 ways of doing it and i ve got 2 different ans. i wanna know which is correct.

plz solve soon

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ashish banga

Blazing goIITian

Joined: 16 Dec 2006

Posts: 1362

5 Apr 2008 00:48:36 IST

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for a loop B =

= angle subtended by the loop at the centre =

in case of semicircle
solve to get

suresan

Hot goIITian

Joined: 10 Mar 2008

Posts: 186

5 Apr 2008 04:27:18 IST

Like 1 people liked this

B =

I/4r

then r =

/4B

where

is the permeability of free space

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