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Are low voltage landscape light bulbs direct current or ac current?
Wiki User
∙ 9y ago
Answer Most likely DC If they plug into the outlet of the home without a transformer (Little heavy boxlike plug such as you see on a cellphone charger. then they are most likely DC. You can look on the plug if they are not solar, and usually see some information on the transformer such as input = 120v ac and Output = 12v DC, The output voltage is the voltage that you want to look at. For example: If you have a iPod and it uses 5v to charge it, then in the Car charger for that said IPOD is going to be a transformer that converts the 12v from your car down to 5v. The Input would be 12volts and the Output would be 5volts. Same witht the house charger, the only difference is that the House Charger would convert the 120volts AC (Input) down to the 5volts DC (Output). invariably it will be a low voltage AC/DC invariably will a transformer to isolate and reduce the voltage to a low value. solar does not require any tranformers and/or wireing of any kind the power is the battery being charged by the sun during the day.
Another Answer
If the lamps are incandescent, then it doesn't matter. Incandescent lamps behave in exactly the same way, regardless of whether the current is a.c. or d.c.
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∙ 9y ago
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How many amps do light bulbs draw?
Depend on watt and voltage use of light bulbs. You can use this ohm's law formular to calculate the current draw on light bulbs. I (current in amp) = P (watt)/ E (voltage) If 25W light bulb use in 115V AC (resident home) then current draw will be: 25/115 = 0.22A or 22 miliamperes. Hope this help.
How much electricity does a T8 32w fluorescent light bulbs use?
These tubes need a ballast to operate the tubes. The current and voltage will be marked on the fixtures ballast.
What could you do to a closed circuit consisting of 2 batteries and 2 light bulbs and a switch too increase the current?
The switch will not increase the current. The only thing that will increase the current is adding a larger load.Another AnswerTo maximize current flow in a circuit with 2 Flashlightbatteries, 2 Flashlight bulbs, and a switch, set aside the bulbs, put the batteries in series, connect the switch between the end poles of the battery set, and close the switch. The batteries will get hot and probably leak electrolyte, and be drained in seconds.If you want to maximize current through the circuit withthe bulbs in it, connect the bulbs in parallel to each other, and in series with the switch.
What are the best LED replacement bulbs?
It really depends on where you are going to use the bulbs!All the light bulbs do not operate the same voltage for starters, there would be nothing surprising about that, but unless you are aware of the differences between them you could be in a little shock. LED bulbs come in two primary voltages: mains voltage and low voltage.Mains Voltage BulbsThe mains electricity supply in the United Kingdom is 230 V Ac (Alternating Current). This is used to supply the majority of domestic and commercial lighting.LED (Light Emitting Diodes) operate at low voltage DC (Direct Current). As such, LED bulbs that are designed to run straight off the mains, like GU10, B22 or E27, require a driver to change the voltage from 230 AC.You will observe about GU10 LED bulbs (230 V) is that they are slightly longer than the low voltage MR16 bulbs(12 V). This is due to the fact that the driver unit is placed into the GU10 fitting.Low Voltage BulbsLow voltage bulbs, are simply lights that run at a lower voltage than provided by the mains electricity supply. They used to exist in the cars where connecting to the mains electricity supply was not viable and the lights would have to run off either a 12V or 24V engine battery instead.Low voltage lighting in houses is a recent innovation. It is created primarily for fittings in kitchens and bathrooms. Instead of being connected directly to the mains supply, an intervening transformer 'steps down' the mains voltage.When you exchange your old halogen bulbs for MR16 LED, there is no guarantee that they will work with your existing 12 V transformer. Contact your retailer to determine whether or not you need to upgrade your system.LED lights have come a long way in the last few years and so have the prices so keep looking. Any good LED lighting website will have info on which lights are best for the application you need them for so have a look around.
How are light bulbs efficiency increased?
The brightness of a standard bulb is directly proportional to the amount of voltage drop across the bulb itself. Thus, to increase the brightness :-Pass more current across the bulb by reducing the resistance of the circuitIncrease the voltage across the bulb, or the circuit. Change the supply.
What happens to electrical current and voltage in a parallel circuit as you add more bulbs?
Voltage remains constant; current increases.
What happens to the current if the number of bulbs stays the same but you use more cells?
If you add more cells in series with the bulbs, the current will increase as the voltage across the bulbs increases. If you add more cells in parallel with the bulbs, the current will stay the same because the voltage of the cells does not increase when they are added in parallel.
In a series circuit when adding light bulbs does the current change?
Yes. The current is inversely proportional to the resistance. I = V / R where I is current, V is voltage, and R is resistance. Adding light bulbs adds resistance. Current is constant throughout a series circuit; it doesn't change no matter what. Voltage changes.
What is the current if the light bubs are in paralles?
The current if the light bulbs are parallel is I= V/R where V is the voltage and R is the resistance of the bulb.
How is the electrical power of light bulbs is measure?
By taking the voltage across the bulb and multiply by the current flow.
How do you get more power from a dynamo?
Assuming you mean on a bicycle, Screw in bulbs that need more voltage, but the same current.
Calculate the current in a series of four 50ohms bulbs?
The series resistance is 4 x 50 = 200 Ohms. You would need additional information to get the current; usually this is calculated from the voltage. current = voltage / resistance. mistybabe r19 :DD
How many amps do light bulbs draw?
Depend on watt and voltage use of light bulbs. You can use this ohm's law formular to calculate the current draw on light bulbs. I (current in amp) = P (watt)/ E (voltage) If 25W light bulb use in 115V AC (resident home) then current draw will be: 25/115 = 0.22A or 22 miliamperes. Hope this help.
In a parallel circuit with three bulbs?
All of the bulbs will become dimmer as more bulbs are added.
How does the number of bulbs affect the amount of electrisaty in a circuit?
Adding additional lamps has no effect on the supply voltage supplied to you home. If the lamps are connected in series, then the sum of voltage-drops appearing across each lamp will equal the supply voltage. If the lamps are connected in parallel, then the voltage across each lamp will equal the supply voltage.
The electric bulb in your household circuits are connected in parallel what happens to the line current and line voltage as you turn on more light bulbs?
The line current increases when more bulbs are switched on in parallel, since more parallel current paths results in lower effective resistance. The line voltage should not change in response to any normal use of electric power in a single house.
Why does the current in an electric circuit decrease when more bulbs are added?
If you add one extra bulb and the voltage remains constant, then you have doubled the current drained from the regulator. 12 Volt and One 12 Watt light bulb drains 1 Ampere Current. 12 Volt and Two 12 Watt light bulbs drains 2 Ampere Current. However: If having a 24 volt power source and you add two 12 Volt 12 Watt in serial, then you still only drain 1 Ampere Current. NOTE: Wattage and Voltage of bulbs may be different even if the sockets are the same. Lower voltage on the bulb will increase the current drain, if voltage is a lot lower it might cause the circuit delivering voltage to burn out or blow a fuse. It can also quickly burn the bulb, sometimes in a fraction of a second. It will however do little damage to add a bulb with higher voltage than the circuit is designed for. You will then only observe that you do not get the light you might hope for. Total Current/Ampere= Combined Wattage divided by Voltage Total Wattage = Combined Current or Ampere multiplied by Voltage. In simpler words: If you double the bulbs, twice the current is drained from the battery
