Question

11. Two conductors A and B supported on insulating
stands are joined by a conducting wire. State the
direction of flow of electrons in each of the
following cases:
(a) If A is positively charged and B is uncharged
(b) If A is negatively charged and B is uncharged
(c) If A is positively charged and B is negatively
charged
(d) Both A and B are uncharged​

Answer 1

In the case A

The current in the wire is due to the drifting of electrons inside a wire in a direction opposite to the flow of electrons. During their drifting they collide with their atoms vibrating about their mean position and lose some of kinetic energy to the vibrating atoms. The electrons are negatively charged particles and so, the electrons move towards the positively charged conductor A.

Hence, the direction of the flow of electrons in the copper wire is from B to A.

Electron moves from B to A.

In the case B

Electron moves from A to B

In the case C

Electron moves from B to A

In the case D

There is no flow electron.

I hope this will be helpful to you.