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Himanshu posted an Question

July 23, 2020 • 06:46 am

30 points

IIT JAM
Physics (PH)

Magmatism.

Tell me how by using vector form of biot savart law ( pic 1) it derive it's derivation in current density form. I want it's derivation.

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Chandra prakash

see attached file it's very helpful for you dear
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see attached file
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it's best explanation of biot savart law....
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Ruby negi Best Answer

complete solution... r^3 or r^2 will come according to the r cap or r vector.. see solution , u will get it.. for any doubt u can ask..
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best regards
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mam i have very minute doubt that how the first boxed equation come bcz the above one which have sin@ does not have r element in numerator right !!!!
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dear,u know sine of theta come during cross product so here I change sine theta to J cross r cap... hope u get.. if not do let me know
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r cap has magnitude 1 so cross product of J with r cap gives J*sine of theta..
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Dhairya sharma

In first image they used A × B=|A|.|B| sinø. but there is a printing mistake the denominator will be r^3, not r^2. because they have multiplied and divide |r|. In second pic they just multiplied by length element. most important it is thumb rule
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drop a comment for querry
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Ghost.

See attachment.
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Ghost.

In first image they used A × B=|A|.|B| sinø. but there is a printing mistake the denominator will be r^3, not r^2. because they have multiplied and divide |r|. In second pic they just multiplied by length element. Regards.
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Ravi prakash yadav

see the attachment
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