Answer:Here are the words categorized by their proper heading and source of power:# Electronic Devices Powered by Electricity1. Computer (Electricity)2. Laptop (Battery/Electricity)3. Microwave (Electricity)4. Washing Machine (Electricity)# Electronic Devices Powered by Battery1. Calculator (Battery)2. Wrist Watch (Battery)3. Clock (Battery/Electricity)# Lighting1. Touch Light (Electricity/Battery)# Power Source1. Main Cell ( likely referring to a battery or power source)Let me know if you have any further questions or if there's anything else I can help with!