Moving a conducting rod in a magnetic field

[subhradeep mahata]

Homework Statement

A small conducting rod of length l moves with a uniform velocity v in a uniform magnetic field B. Explain how the end Y becomes positively charged.

Homework Equations

The Attempt at a Solution

I know the concept, a force will act on the conductor which will push the electrons , and the end where electrons will be deficit will have positive charge. But I can't understand how to find the direction of force...I feel that the direction of induced current is also required. Please help me out ![/B]

 

[nrqed]

Homework Statement

View attachment 225965
A small conducting rod of length l moves with a uniform velocity v in a uniform magnetic field B. Explain how the end Y becomes positively charged.

Homework Equations

The Attempt at a Solution

I know the concept, a force will act on the conductor which will push the electrons , and the end where electrons will be deficit will have positive charge. But I can't understand how to find the direction of force...I feel that the direction of induced current is also required. Please help me out ![/B]

Think of the electrons inside the rod. You know the direction of their velocity so you can determine the direction of the magnetic force on them.

 

[subhradeep mahata]

Oh yes ! Now i get it...
Thanks nrqed