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22nd October 2006, 14:54 #1
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what is difference between.....
divergence and curl of a vector
stoke's theorem and divergence theorem
motional and transformer induction

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22nd October 2006, 16:12 #2
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Re: what is difference between.....
Hello !
1. Divergence is an opertator of transformaing a vecotr to scalr (del(A))
and Curl is vector multiplication of the del op. with any given vector: del X A
(the del op. is called also sa nabla and its defined is the parlty derivative of the x, y and z componnent).
the reusltent is a vector which prependicualr to the two multiplied vectors (in our case the del op. vector and the A vector)
2. The Stoke's Theoremrelates a clused line integration to a surfcace area bounding it.
and the Divergence Theorem relates the closed surface of a body to its volume by the div. op.
About the 3rd pair  I don't know !
Hoped I helped !

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23rd October 2006, 22:01 #3
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Re: what is difference between.....
3. Motional and transformer EMF:
Motional EMF is the emf induced due to the relative motion between magnetic flux lines (whether of fixed field or not) and a conductor, [i.e. like moving a coil in a magnetic field, like that which is induced in a generator]; while the transformer emf is the induced emf by electromagnetic couplying between two objects, which don't move relative to each other, due to timevarying current, volt or magnetic field in one of the objects.[i.e. Like that in the transformer]
:D
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