Final answer:
A motorized bike or moped is a vehicle powered by a battery and solar cells. It uses wheel hub motors for propulsion and is controlled to maintain balance.
Step-by-step explanation:
A motorized bike or moped is a type of vehicle that is powered by a combination of a battery and solar cells. The battery, which can be charged using renewable energy sources or plugged into an electrical outlet, provides most of the energy, while the solar cells help extend the battery life on sunny days. The bike or moped typically has two wheels side by side and is designed to accommodate a single passenger. It uses wheel hub motors for propulsion and is controlled to maintain balance, similar to a Segway personal transport device.