A Light bulb lights in a complete circuit because then the electricity from the battery can travel round the wire that has no breaks. BUT the switch has to be close.
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To make a light bulb light up, you need a closed electrical circuit. This circuit typically consists of a power source (such as a battery or outlet), wires to carry the electricity, and the light bulb itself. When the circuit is complete and electricity flows through the bulb, it will produce light.
It has components that are arranged end to end in order to produce light.
to complete the circuit you have to add 1 light bulb.
it will not shine
If a light bulb is touched by a conductor to complete the circuit, it will turn on if the circuit is closed and working properly. The conductor helps to create a path for the electricity to flow from the power source to the light bulb, allowing it to illuminate.
It doesn't matter where the bulb is in respect to the battery, as long as the circuit is complete, the bulb will light up.
battery, wire, and light bulb
The glass of the light bulb is not conductive, so the circuit would not be completed. You would need to join the wires to the positive and negative contacts on the base of the bulb for the circuit to work.
When one wire or terminal is not connected to a light bulb, it is not possible for electricity to complete the circuit. When a circuit is not completed, the bulb will not light. An off switch, for example, breaks the circuit.
What needs to be complete is the circuit from the battery to the bulb, then the other wire from the bulb to the other side of the battery.If it is from an outlet rather than a battery, the circuit starts and finishes with the live and neutral pins at the outlet.
Either the bulb gets blown itself or the tungsten wire melts and opens the circuit, causing the light bulb to fuse.
The simplist answers is that electricity needs to complete a circuit fully. It stops flowing because there is no complete circuit. The switch is a device for opening and closing the circuit. When the switch is in the off position the circuit is said to be open and electricity cannot flow.