Question

When a current flows through a conductor $AB$ from end $A$ to the other end $B$, the charge carriers in motion are _______.

• A. Protons from $A$ to $B$
• B. Electrons from $A$ to $B$
• C. Protons from $B$ to $A$
• D. Electrons from $B$ to $A$

Answer 1

The correct option is D Electrons from $B$ to $A$

In conductors , the electrons which are negatively charged particles are the charge carriers.

And by convention the direction of current is taken along the direction of flow of positive charges.

And hence, electrons flow opposite to direction of current.

Hence, when current flows from A to B, electrons flow from B to A.

Answer-(D)