The primary source of electrons in an ordinary electrical circuit is
A) the power station generator.
B) a dry cell, wet cell or battery.
C) the electrical circuit itself.
D) the back emf of motors.
E) none of these

Question

Quizplus · Accepted Answer

The primary source of electrons in an ordinary electrical circuit is the electrical circuit itself, as the electrons are already present in the conductive materials (such as metals) that make up the circuit. They are not supplied from an external source but are moved through the circuit by the electric field created by the voltage source.

The Primary Source of Electrons in an Ordinary Electrical Circuit