about 2wattes
No, a 120-volt LED lamp should not be used in a 220-volt socket, as it can cause the lamp to fail or even pose a fire hazard. The voltage difference can damage the lamp's internal components. If you need to use a 120-volt lamp in a 220-volt environment, consider using a step-down transformer or a voltage converter designed for this purpose. Always ensure compatibility to avoid safety risks.
It should work okay.
A 15-volt transformer can potentially replace a 12-volt transformer for an LED aquarium light, but it may not be advisable. LEDs are typically designed to operate at specific voltage levels, and using a higher voltage could lead to overheating, reduced lifespan, or even damage to the LEDs. It's best to use a transformer that matches the voltage rating specified by the LED manufacturer to ensure safe and optimal performance.
Depends on the size of the LED light and the voltage applied. An example is an LED 24 volt globe light that pulls 8 watts which draw 0.333333 amps. Take an LED 120 volt light bulb draws 12 watts and will pull 0.1 amps. The same bulb at 240 volts wil draw 0.05 amps. it really depends on the watts and voltage applied. An average would be about 0.1 amps.
To calculate the resistance needed, you can use Ohm's Law: R = V^2 / P, where R is resistance, V is voltage, and P is power. In this case, R = (3^2) / 3 = 3 ohms. You would need a 3-ohm resistor to safely connect a 3-volt LED to a 220-volt source.
Generally 330ohm resistors are used to power a typical 3 volt LED if the source voltage is 5v
Typically, a 100 ohm resistor is used to connect a 1.5 volt led to a series 220v ac adapter. Many LEDs can be connected into a string using the resistors.
It should work okay.
It is drawing .06 amps.
Not enough information provided. You really need to check the LED light's voltage rating. If the voltage of the battery is much higher than the LED's voltage rating, it will probably get harmed.
Try wires. You will also need a resistor. You also need to know that a watch battery is not rated to carry the current load of a typical LED.
This will depend on the size of the 12 v battery.
34Kohms
Depends on the size of the LED light and the voltage applied. An example is an LED 24 volt globe light that pulls 8 watts which draw 0.333333 amps. Take an LED 120 volt light bulb draws 12 watts and will pull 0.1 amps. The same bulb at 240 volts wil draw 0.05 amps. it really depends on the watts and voltage applied. An average would be about 0.1 amps.
For a 7.2-watt, 12-volt LED lighting unit, you need a power adapter that provides 12 volts and at least 0.6 amps (since 7.2 watts divided by 12 volts equals 0.6 amps). It's advisable to choose an adapter with a slightly higher current rating, such as 1 amp, to ensure proper operation and avoid overloading the adapter. Make sure the adapter has the correct connector type and polarity to match your LED lighting unit.
6
I recommend 120 volt 20 watt halogen if you are on a budget. If you can afford them 120 volt LED is even better and will last for years.