Consider a current carryiing wire (current I) in the shape of a circleA. source of emfB. electric field produced by charges accumulated on the surface of wireC. the charges just behind a given segment of wire which push them just the right way by repulsionD. The charges ahead.

Consider a current carryiing wire (current I) in the shape of a circle

1.	Consider a current carryiing wire (current I) in the shape of a circleA. source of emfB. electric field produced by charges accumulated on the surface of wireC. the charges just behind a given segment of wire which push them just the right way by repulsionD. The charges ahead.
Answer» Correct Answer - B Current per unit area (taken normal to the current( I/A, is called current density and is denoted by j. the SI units of the current density are `A//m^(2)`. The current density is also directed along E and is also a vector and the relationship is given by `j=sE` The j changes due to electric field produced by charges accumulated on the surface of wire.

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Consider a current carryiing wire (current I) in the shape of a circleA. source of emfB. electric field produced by charges accumulated on the surface of wireC. the charges just behind a given segment of wire which push them just the right way by repulsionD. The charges ahead.

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