Which input power form does the onboard charger use?

• A. AC power
• B. DC power
• C. Solar power
• D. Wind energy

Answer: (A)

The main idea is that the onboard charger is designed to take alternating current from the grid and convert it into direct current for the battery. When you plug into a typical wall outlet or a Level 2 charging station, the electricity arrives as AC. The onboard charger uses power electronics to rectify and regulate that AC, transforming it into the DC that the battery stores and uses for propulsion. DC input would bypass this stage, which is what happens in DC fast charging where a separate high‑power charger feeds DC directly to the battery. Solar or wind are energy sources, not the input form of the charger itself, so they’re not describing the charge input when you’re talking about the onboard charger’s function.