Question

Fig. below shows two conductors A and B. Their charges and potentials are given in diagram. State the direction of flow of electrons.

• A. B to A
• B. no flow
• C. A to B
• D. cannot be predicted

Answer 1

The correct option is C A to B

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.
In this case, the negatively charged particles are present towards the conductor A as indicated by the -10 C of charge. These charges move towards the positively charged conductor B which is indicated by the 5 C charge.
Hence, the direction of the flow of electrons is from A to B.