Question

Electric current is the flow of which of the following?
1. Neutrons
2. Photons
3. Electrons
4. Quarks

Answer 1

Correct Answer - Option 3 : Electrons

Electric current is the flow of Electrons.

Electric current:

• Denoted by I, electric current is the rate of flow electric charge through any section of wire. Its SI unit is ampere(A).
• The direction of the conventional current corresponds to the direction of positive charge which is from higher potential(positive) to lower potential(negative).
• Electric current is associated with the movement of electrons which is from lower potential(negative) to higher potential(positive), therefore, the direction of electric current is opposite to that of conventional current.
• Even though electric current has direction, it is not a vector quantity as the addition of electric current follows the laws of ordinary algebra and not the laws of vector algebra.