Question

question 32
the source of electrons in an ordinary electrical circuit is
a dry cell, wet cell or battery.
the back emf of motors.
the power station generator.
the electrical conductor itself.

Explanation:

In an ordinary electrical circuit, the source of electrons is the electrical conductor itself. Conductors have free electrons that can move when a potential difference is applied. A dry cell, wet cell, or battery provides the potential difference (voltage) to drive the flow of these electrons, not the electrons themselves. The back emf of motors is a result of electromagnetic induction in the motor and not a source of electrons. The power station generator also provides electrical energy (in the form of voltage) to drive the flow of electrons in the circuit, not the electrons.

Answer:

the electrical conductor itself.