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Q: Gene has a string of lights on a series circuit. What will occur if one of the light bulbs on the circuit burns out?
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You are building a string of lights using several bulbs how is the brightness of the lights related to whether you connect the bulbs in series or in parallel?

Overall brightness (not individual bulbs' brightness) will increase when we connect them in parallel & it will decrease when we connect them in series.


What is the voltage rating when a string of A Christmas bulbs in series draws Ampere when connected to a volt source?

If the bulbs are wired in series, the voltage rating for each bulb is the source voltage divided by the number of bulbs in the series. You can tell if they're wired in series by removing a bulb. If all of the other lights go out, you have a series circuit. If all of the other bulbs stay lit, you have a parallel circuit. If half of the lights go out and the other half stay lit, you have two series circuits in parallel. The source voltage is about 110 volts in North America or about 220 volts in Europe (I don't know about Asia or Australia). If you have a series/ parallel mix, count only the bulbs that go out with the one you removed. For example, if you have 50 lights in one series in North America, the voltage across each bulb is about 2.2 volts.


In a series circuit what would happen if one of the bulbs stopped working?

All the bulbs will go out. In a series circuit, the current at all points is the same. This is Kirchoff's Current Law. If you loosen or remove a bulb in a series circuit, the current at that bulb becomes zero, and by Kirchoff's Current Law, the current in every part of the circuit also becomes zero.


Why you can't usually swap bulbs between series and parallel sets of lights?

If it is in the same circuit, the voltage would not be the same. ANSWER: That is possible if both bulbs have the same rating of volts and amperes


If one light goes out on a series-parallel connected string do they all go out?

If one light goes out on a series-parallel connected string, all of the lights in that particular series string will go out. The other parallel strings will not be affected. If you are asking about Christmas tree lights, please note that most modern low voltage bulb designs make the bulb short out, rather than open, when the filament burns out. This keeps the other bulbs in that series string on, although they now have more power and are more likely to also burn out.

Related questions

Where is the load on a string of Christmas lights?

The load on a string of Christmas lights is typically located in the bulb itself. Each bulb is designed to produce light and consumes power when electricity passes through it. The collective load of all the bulbs on the string determines the amount of power required to illuminate the lights.


If one of the bulbs in a string of lights is missing but the lights still work what type of circuit connects the lights?

A parallel circuit. All the lights are connected in parallel across the power source.


Would you use Series or parallel circuit for Christmas 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.


What are the disadvantages of a series circuit?

Series circuits like a string of Christmas lights, can be very annoying. If one bulb in burnt out, broken, or unproperly screwed, the entirely will disconnect and the system will fail. Cheack out clara-the-awesomest.tumblr.com


You are building a string of lights using several bulbs how is the brightness of the lights related to whether you connect the bulbs in series or in parallel?

Overall brightness (not individual bulbs' brightness) will increase when we connect them in parallel & it will decrease when we connect them in series.


Why when one of the bulbs goes out on your Christmas tree lights then they all go out?

These are old generation lights. They are connected in series with each other. This means if one of the filaments in any one of the bulbs opens the circuit current flow stops. For example if each bulb is rated at 2 volts each then a string of 60 bulbs can be on a 120 volt circuit. lamps connected in series, because each bulbs filament resistance is the same, will will drop a voltage across each bulb by the total number of bulbs in the string divided into the supply source voltage. 120 volts / 60 bulbs = 2 volts per bulb.Newer sets of lights have a have a spring mounted in each lamp. When any lamp filament opens a spring is released and shorts out the two wires where the filament was. This allows the string of lights to remain operable. This has a drawback in that as more lights burn out the voltage becomes higher across the other bulbs. Eventually the bulbs will start burning out faster and faster as the voltage across each bulb becomes higher and higher. Use the equation above to see this fact.Christmas string lights today use LED bulbs which last many times longer than an incandescent bulb in the string set.


A string of 20 Christmas tree lights are connected in series to a 20 volt power source The bulbs each have a resistance of .5 ohm How much current is flowing through the circuit?

2 amps. If it is D.C.


What is the voltage rating when a string of A Christmas bulbs in series draws Ampere when connected to a volt source?

If the bulbs are wired in series, the voltage rating for each bulb is the source voltage divided by the number of bulbs in the series. You can tell if they're wired in series by removing a bulb. If all of the other lights go out, you have a series circuit. If all of the other bulbs stay lit, you have a parallel circuit. If half of the lights go out and the other half stay lit, you have two series circuits in parallel. The source voltage is about 110 volts in North America or about 220 volts in Europe (I don't know about Asia or Australia). If you have a series/ parallel mix, count only the bulbs that go out with the one you removed. For example, if you have 50 lights in one series in North America, the voltage across each bulb is about 2.2 volts.


In what type of circuit would a burned out light bulb cause other light bulbs in the circuit to go out?

This is the case in a series circuit. (like the small Christmas lights.)


What would you conculde if you saw if one bulb burned and all lights fail?

The bulbs are in connected series. There was a short circuit and the circuit breaker tripped.


In a series circuit what would happen if one of the bulbs stopped working?

All the bulbs will go out. In a series circuit, the current at all points is the same. This is Kirchoff's Current Law. If you loosen or remove a bulb in a series circuit, the current at that bulb becomes zero, and by Kirchoff's Current Law, the current in every part of the circuit also becomes zero.


Why you can't usually swap bulbs between series and parallel sets of lights?

If it is in the same circuit, the voltage would not be the same. ANSWER: That is possible if both bulbs have the same rating of volts and amperes