What supplies the electrical energy that allows current to flow?

• A. Resistor
• B. Capacitor
• C. Power source
• D. Ground

Answer: (C)

Current flows only if something provides energy to push the charges around the circuit. That energy comes from a power source, which creates a voltage difference (electromotive force) that drives electrons through conductors and any components in the loop. Without this energy source, charges wouldn’t be pushed to move, and current would stop.

A resistor is a passive element that slows current and converts some of the electrical energy into heat; it does not supply energy. A capacitor stores energy in an electric field and can deliver it briefly, but it does not continuously provide energy on its own. Ground is simply a reference point and safety path; it does not generate energy.