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What switches must be closed in order for the light bulb to light up?
To light up the bulb, the two-way switch must be closed in the on position at both the 'Switch 1' location and the 'Switch 2' location. This will complete the circuit and allow electricity to flow to the light bulb, turning it on.
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.
What must be true for a circuit to light a bulb?
For a circuit to light a bulb, there must be a closed loop for the flow of electricity. This loop typically consists of a power source (e.g. battery), wires, a switch, and the bulb. When the switch is closed, the circuit is complete and electricity can flow through the wires to the bulb, causing it to light up.
Three different bulbs are connected in series when switch is closed the last bulb does not glow why?
When bulbs are connected in a series circuit, each bulb depends on the voltage from the previous bulb to light up. If the last bulb doesn't glow, it may indicate that there is a break in the circuit somewhere before that bulb, such as a loose connection or a blown fuse. This interruption in the circuit would prevent the flow of electricity to the last bulb, causing it not to light up.
Why does the bulb not light up until you press the switch?
the bulb will light up when current flows thru it if the switch is open no flow will take place
Why does a light bulb light in a closed circuit?
A bulb does not light up if there is no voltage available across the bulb, or if the bulb is burned out.
Why does a light bulb light up immediately after you turn on a switch even if the switch was a long way from the bulb?
When you flip the switch, it completes the electrical circuit and allows current to flow instantly through the wires to reach the light bulb, causing it to light up. The speed of electricity traveling through wires is almost instantaneous, so the light bulb lights up immediately after the switch is turned on, regardless of the distance from the switch to the bulb.
Can a bulb work as a switch?
First answer: No. Second answer: Yes. A light bulb is a resistance. Current flows across a tungsten filament, heating it to produce light. However, if there was some other resistance wired into a closed circuit, a screw type bulb could be used as a switch. You unscrew it to throw open the circuit, effectively turning off whatever else was wired in the line. Screw it back in to switch it on. So yes, you could use a light bulb as a switch. Some switches have LED (light emitting diodes) built into them so they light up when the switch is closed, and turn off when the switch is open. And some switches are wired just the opposite, so the LED is on when the switch is off. This makes these types of switches easier to find in the dark.
How do you know that house lights are wired?
When you turn the light switch to the up (on) position, if the bulb is not burned out, the light bulb will glow.
Will the light bulb light up if you connect a wire to it?
No, a light bulb needs a closed circuit with a power source, such as a battery or electrical outlet, in order to light up. Simply connecting a wire to a light bulb without a power source will not allow it to light up.
Why doesn't a bulb light up until you press the switch?
A switch completes the circuit, allowing electricity to pass from the cell (battery) to the bulb.
When you open the switch what happen to the bulb?
If the switch is in the off position, the circuit will be broken and the electric current can't flow to the bulb, so the bulb will not light up.
