Consider a current carrying wire (curren...

Consider a current carrying wire (current I) in the shape of a circle. Note that as the current progresses along the wire, the direction of `vecJ` (current density) changes in an exact manner, while the current I remains unaffected. The agent that is essentially responsible for is

source of e.mf.

electric field produced by charges accumulated on the surface of wire.

the charges just behind a given segment of wire which push them just right way by repulsion

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

source of emf

electric field produced by charges accumulated 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.

source of emf.

electric field produced by charges accumulated 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.

the same as the direction of the flow of electrons through the wire

opposite to the direction of flow of the electrons through the wire

the same as the direction of flow of the newtrons through the wire

opposite to the direction of flow of neutrons through the wire