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You should be able to read the power off the bulb or its packaging.
What else can I help you with?
How do you know a light bulb transforms 100 percent of its electricity into light?
You don't. A light bulb transforms only a fraction of its energy into light, and most of it into heat. For an incandescent bulb about 3% is transformed into light, while for a compact fluorescent (low-energy light) about 15% is transformed into light.
Is a light bulb an input or an output?
A light bulb can be considered an output device as it converts electrical energy into light energy. In the context of a system, the light bulb would typically be connected to an input device such as a switch or sensor that controls when the light bulb turns on or off. Therefore, while the light bulb itself is an output, its operation is often dependent on input signals.
How are modern light bulbs different from the old light bulb?
I think they save energy and are folersent but what do i know
How do you use energy transformation in a sentence?
you just need to ..........................................i don't know
How many tomato does it take to light a bulb?
sorry don't know ; im only eleven "I know" 1 supertomato or 3,003,494,560,327,650,836,140,520,347,257,345,803,465,876,324,065,086,237,248+ lemons dressed as tomatos ; ha I'm twelve
How do you know the efficiency of a light bulb?
The efficiency of a light bulb is typically measured by its luminous efficacy, which is the amount of visible light produced per unit of power consumed. This is usually expressed in lumens per watt. The higher the luminous efficacy, the more efficient the light bulb is at converting electrical energy into visible light.
Is electric energy converted to heat energy or light energy?
Yes, electrical energy can be changed into thermal (heat) energy. Light is electromagnetic energy, and electricity can be changed into light energy. We know that a resistance heater changes electrical energy into thermal energy. An electric range does this, as does an electric space heater. We see electrical energy changed into light in fluorescent lights.
How do you know how to change the front light bulb on a 2002 Malibu car?
Remove the light bulb connector from the light. Take hold of the light bulb, push in and turn at the same time. The light bulb will come out. Reverse the process to install the new light bulb.
Energy transfer diagram for a torch?
Chemical changes into Light and heat energy http://www .bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_120.gif if you don't know how to do a energy transfer diagram copy and paste into bar ^ take out space after w, hope that helps! : )
What is most energy efficient led lamps or bulbs?
The most efficient outdoor light bulb would the 5 watt Light emitting Diode light bulb also know as the LED bulb. They are small lights with miniature sockets or made to fit into conventional sockets.
How do you know that house lights are wired?
When you turn the light switch to the up (on) position, if the bulb is not burned out, the light bulb will glow.
How can you know if a electrical circiut is working?
if the light bulb is on
