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If vec(j) and vec(E ) are current densit...

If `vec(j)` and `vec(E )` are current density and electric field respectively inside a current carrying conductor , then correct relation is

A

`vec(j ) = sigma vec(E )`

B

`vec(j ) xx vec( E ) = 0 `

C

`vec( j) . Vec( E ) gt 0`

D

All of these

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