Consider a current carrying wire (Current l) in the shape of a circle. Note that as the current progresses along the wire, the direction of current density vecj changes in an exact manner,while the current j remains unaffected the agent that is essentially responsible for it is

Consider a current carrying wire (Current l) in the shape of a circle.

1.	Consider a current carrying wire (Current l) in the shape of a circle. Note that as the current progresses along the wire, the direction of current density vecj changes in an exact manner,while the current j remains unaffected the agent that is essentially responsible for it is
Answer» source of emf electric field produced by CHARGES accumlated on the surface of WIRE the charges just behind a given SEGMENT of wire which PUSH them just the RIGHT way by repulsion the charges ahead Solution :`vecj=sigmavecE`

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Consider a current carrying wire (Current l) in the shape of a circle. Note that as the current progresses along the wire, the direction of current density vecj changes in an exact manner,while the current j remains unaffected the agent that is essentially responsible for it is

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