Parallel, of course. Each light has to receive the full voltage - 110 or 220 Volts, depending on the region. Also, if you disconnect one light, the others should continue working. This wouldn't be the case with a series circuit.
If you mean Christmas lights; that was before. Nowadays Christmas lights are connected in parallel.
series circuit
To design a circuit so that lights can be turned on and off separately, we connect the circuit in parallel.
The advantages of parallel circuits are that if one component, e.g. light bulb fails, the other ones will keep functioning. The problem with series circuits are that if one light bulb fails, the others are also affected.
A parallel circuit is used when the current through several components needs to be independent of each other. The simplest example is that of lights in a home. The lights with their switches are wired in parallel. Turning on one light does not affect any others and similarly, turning a light off does not turn off any others. Each light is supplied with the same voltage which does not change even if other lights are turned on or off. A series circuit is one where the current flows through one component and then through a second component and so on. If the current flow through one component is changed, it is also changed in all the others in the series circuit. A string of Christmas lights is a good example. Removing one bulb from the string of lights will stop all the others operating because there is no current flowing through any of them.
My dad created a parallel circuit when he plugged in the Christmas lights.
Christmas tree lights, this parallel circuit prevents one bulb failure from turning off the whole string of lights.
Yes you would use a serial circuit You would use parallel circuit lights for a Christmas tree because if you used series circuit lights, and one of the bulb blows, the rest of the bulbs will go out. But with parallel circuit lights, if one bulb blows the rest of the bulbs will remain their brightness.
both
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.
Two receptacles on a branch circuit, each in parallel, both in series with the circuit breaker. The blower motor, ignition transformer, and oil solenoid on an oil burner, each in parallel, all in series with the acquastat (water temperature control switch).
In a series circuit, if any one bulb goes open the rest of the lights will go out. The current flow in a series circuit is common throughout the whole circuit. In a parallel circuit when one bulb goes open the rest remain on due to the configuration 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.
No, electric lights come in both parallel and series circuit.
If you mean Christmas lights; that was before. Nowadays Christmas lights are connected in parallel.
series circuit
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.