Question
a) An electric current is the rate of flow of.... ...potential difference. ...charge. ...energy. ...power. ...resistance. b) The current in metals is a flow of.... ...electrons. ...protons. ...atoms. ...neutrons.
Answer
4.4
(261 Votes)
Finley
Advanced · Tutor for 1 years
Answer
a) ...charge. b) ...electrons.
Explanation
a) An electric current is driven by the flow of electric charge. Applying further energy adds no additional electrical charge to the source. Therefore, the current is independent of both energy and power. A potential difference can influence electric charge flow, but it is not the flow itself. Finally, resistance characterizes how intensely a component impedes an electric current, which again is a different concept. b) Electrical currents inside metals, such as wires, are driven primarily by an electron flow. Protons, atoms, and neutrons do not typically flow or move in creating the electrical current seen within most metals, making the other options incorrect.