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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.

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10y ago

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What describes electricity flowing from a battery through a switch to a light bulb?

A circuit


What is on off switch?

Say it is a power circuit, a light bulb is bright from the battery, flowing through the wires and the light bulb. There is a switch controling the power that goes through, so if you switched the off switch off, the power will no longer be flowing through(the light bulb wouldn't be bright any longer). Say it is a power circuit, a light bulb is bright from the battery, flowing through the wires and the light bulb. There is a switch controling the power that goes through, so if you switched the off switch off, the power will no longer be flowing through(the light bulb wouldn't be bright any longer).


When the switch is closed which light bulb will light light bulb 1 2 or 3?

It depend on where the switch is located in the circuit.


How does a light bulb dimmer switch work to adjust the brightness of a light bulb?

A light bulb dimmer switch works by controlling the amount of electricity flowing to the light bulb. By adjusting the voltage, the dimmer switch can regulate the brightness of the light bulb.


Why is a light bulb not on when a switch is not closed?

A closed switch completes the electrical circuit, allowing current to flow through the light bulb and generate light. If the switch is not closed, there is an open circuit, meaning the current cannot flow and the light bulb does not turn on.


If two light-bulbs are connected in a series circuit and one of the light-bulb's current flowing is 0.5 A what is the current flowing in the other light-bulb?

Current in a series circuit is the same throughout the circuit. Voltages are additive. Voltage in a parallel circuit is the same throughout the circuit. Currents are additive.


A light bulb in a simple circuit blows and goes out Is current now flowing in the circuit?

No. Circuit is open but still HOT.


What is the function of the switch in circuit?

A switch simply opens a circuit, stopping the flow of electricity. For example: a simple circuit would be two wires from a battery, one of which goes to a switch, and the other goes to a light bulb. A third wire goes from the other side of the switch to the other conductor of the light bulb. With the switch closed the circuit is complete and the light goes on. Open the switch and the circuit is broken and the light goes off.


How would the circuit inside a flashlight work?

Flashlight by light, battery, circuit, a hood and a reflective cup, circuit storehouse, switch, etc, the basic principle is the current from the battery, and then to the circuit, after adjusting circuit voltage and current, and then output to the light source for lighting.


What is happening when a switch is off?

When the light switch is turned on and a light bulb is connected in the circuit a current will flow through the circuit. Likewise when the switch is opened, the current will stop flowing in the circuit.


Why will a bulb not light if a switch is open in a circuit?

It will not work because it has to be closed so the electricity can go to the bulb.


Why does a light switch turn on your lights?

A light switch completes an electrical circuit when turned on, allowing electricity to flow to the light bulb. This flow of electricity energizes the light bulb, causing it to emit light. Turning the switch off breaks the circuit, stopping the flow of electricity and turning off the light.