What do you think the meaning of "closed circuit" is? Draw a schematic diagram of a closed circuit consisting of a light bulb, a battery and a switch.

What do you think the meaning of "open circuit" is? Draw a schematic diagram of a open circuit consisting of a light bulb, a battery and a switch

What do you believe to be the essential components required to make a working circuit?

Can you get a light bulb to light up without the battery?