Question

a conducting bar is moving to the right in a external magnetic.field pointing out of the...

a conducting bar is moving to the right in a external magnetic.field pointing out of the page which end of the bar will have positive charge accumulated

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Answer #1

Answer:- The positive charge will accumulate on the lower end of the conducting bar.

Explanation:-

Here, a conducting bar is placed in a plane perpendicular to a uniform magnetic field coming out of the page, and is moving in a direction perpendicular to the fiel. A motional emf is produced. The right-hand rule tells us that the magnetic force on positive charges will point in the direction towards downwards, the magnetic force on negative charges will point towards upwards direction. The free electrons will move, and accumulate at the upper end of the rod, while positive charge will be left behind on the lower end. The separated charges produce an electric field, which exerts a force on the other charges in the wire. This electric force opposes the magnetic force.

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