Respuesta :
Answer:
d. the movement of electric charge
Explanation:
Voltage source is used to provide constant voltage difference across the ends of a given conductor where it is connected
Now when voltage source is connected across the conductor we can say that due to constant voltage difference there would be a constant current will maintain in the conductor
It is given by
[tex]i = \frac{\Delta V}{R}[/tex]
now since the voltage difference and resistance both are constant so current will be same in the circuit
So here the flow of charge will remain constant due to voltage source
So correct answer would be
d. the movement of electric charge
