What are they?
Batteries
What three things are needed for a simple circuit?
Battery, wires, lightbulb
Does it have a battery?
Yes
Does it have a battery?
Yes
Does it use mains electricity or batteries?
Mains
Does it use mains electricity or batteries?
Mains
Does it have a battery?
No
What is it?
Circuit
Does it use electricity?
No
Does it use mains electricity or batteries?
Batteries
Does it have a battery?
Yes
Does it have a battery?
No
Does it use mains electricity or batteries?
Mains