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voltage drop across all the parallel elements is equal and it is equal to input voltage.

we know for home applications in voltage and frequency is fixed, ex: in India voltage=230v and frequency=50 Hz. All devices we used in home having voltage specification =230 to 240v, but different current. so home use parallel circuits.

To make this a bit more general, in a series circuit each device in the circuit has some dependence on all the other items. A simple example is a number of light bulbs in series. If any one light bulb burns out the circuit opens and all the other bulbs go out. Also if you needed to add more bulbs in the same series circuit then all bulbs would be dimmer.

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Haylee Leannon

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1y ago
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14y ago

More expensive light will be connected in parallel so that when one bulb burns out the rest will stay on. Cheaper lights are still connected in series and that is why when you remove one bulb they all go out.

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14y ago

You can determine if your lights are wired in series by taking out a bulb in one light and seeing if it makes the lights around it go dead as well. If so then your lights are wired in series and by breaking the conductive connection at one bulb you're preventing current from getting to the other bulbs as well.

If on the other hand your lights are wired in parallel then breaking the connection at one light won't create an open circuit (ie broken loop) for any of the other lights and so the surrounding lights should stay on.

**note there may also be other ways of keeping surrounding lights from going dead besides wiring them in parallel.

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6y ago

For the same reason that the lights in your home are wired in parallel instead of series: if one bulb fails it is the only one that does not light. If they were wired in series, when any one bulb failed the entire string would not light (making it much harder to identify the failed bulb).

However some Christmas tree lights are wired in series, but they use special low voltage bulbs using a special internal shorting switch that reconnects the circuit through a burned out bulb permitting the other bulbs to continue to receive current and remain lighted.

However incandescent Christmas tree lights are being phased out and replaced with LED Christmas tree lights, which won't fail for many years and run much cooler (effectively eliminating the risk of Christmas tree fires caused by the electric lights). This also largely makes the issue of parallel vs. serial wiring of Christmas tree lights irrelevant, as you won't be replacing the bulbs.

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Q: Why are Christmas tree lights wired with parallel circuits instead of with series circuits?
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Related questions

Where are parallel circuits found?

parallel circuits can be used for lots of things.Things such as : . Christmas tree lights False for A+


Are house circuits series or parallel?

Everything in a house is wired in parallel. If you had lights is series when one burns out they would all go out, much like cheap Christmas lights.


Where are parallel circuits used?

Parallel circuits are used when there are many electronics on the same circuit, such as Christmas lights, for example. If they were on a series circuit, if one bulb went out all of them would go out. In your home, parallel circuits allow you to turn any electrical device on or off, independently of the others.


Why are fairy decorative lights always connected in parallel?

If you mean Christmas lights; that was before. Nowadays Christmas lights are connected in parallel.


Would ac or dc be better in lighting circuits in parallel?

Depends on the application. Lights in your house are in parallel with AC and lights in your car are in parallel with DC.


Electric lights will not come on unless their electrical circuit is a parallel circuit?

No, electric lights come in both parallel and series circuit.


What is the difference between series and parallel Christmas lights?

With series Christmas lights, if one burns out, the whole string stops working. With parallel Christmas lights one light burning out only affects that light. This makes it much easier to replace burned out lights in the case of the parallel lights.


Uses of series circuits?

Cheap Christmas tree lights.


Are Christmas tree lights parallel or series?

They are parallel, or at least you HOPE they are parallel.


What would be the advantage of a parallel circuit?

Consistent voltage. One of the advantages of parallel circuits is the fact that they ensure that all components in the circuit has the same voltage as the source. All bulbs in a string of lights, for example, will have the same brightness. Another well popularized advantage of the importance of a parallel circuit is the case of Christmas tree lights. At one point in time, if one light on the string of lights on the tree burnt, all the lights would go out and you would have to look one by one to see which one was the cause. This is because it was - guess what - a series circuit! In our modern parallel circuits on Christmas trees if a light goes out the rest will still light.


Is the lights in your house a series or in a parallel circuits?

All household, commercial, and industrial lighting and outlet wiring is parallel.


Why are christmas tree lights parallel?

they are manufactured in a pattern