A 75 watt light bulb consumes 75 watt every hour if left on continuously.
You electric company charges by the kilowatt hour. So since 75 watts = .075KW x 48 hours you would use 3.6 KWhrs. If you are paying about 12 cents per KWhr it would cost you about 42 cents.
from its power if it is 100 watt so it produces 100 joule per second but this includes all energy produced by the lamp (light/heat energy) Their is a formula E=h x v, E=energy, v=frequency, and h=the constant I think
When lighting a light bulb, it is changed into light and heat/thermal energy.
An electrical watt is a measure of power. A 40 watt light bulb uses 40 watts of electrical power. It has a relative measure of twice the light output of a 20 watt bulb and one half the output of an 80 watt bulb. A 40 watt bulb uses 40 Joules of energy each second, or 40 watt-hours of energy each hour. In 1000 hours it uses 40 kilowatt-hours or Units of electrical energy.
Zero,because the distance has no affect to convert electric energy into light energy.
A bulb in a lamp converts electric energy into light and heat energy.
The formula to calculate the energy usage of a light bulb is Power (Watts) x Time (hours) = Energy Used (Watt-hours). For example, a 60-watt light bulb used for 5 hours would consume 300 Watt-hours of energy.
from its power if it is 100 watt so it produces 100 joule per second but this includes all energy produced by the lamp (light/heat energy) Their is a formula E=h x v, E=energy, v=frequency, and h=the constant I think
To plug it in, you use your muscle energy. When current flows through the bulb,electrical energy converted to the heat and light energy in the bulb.
The energy that goes in is electrical energy; the energy that leaves it is visible light, as well as heat.
The energy used by a lightbulb in kWh can be calculated from the voltage across the bulb, the current through the bulb, and the number of hours of operation of the bulb. energy = voltage * current * hours / 1000
A light bulb uses electrical energy, and produces light, as well as heat.
A light bulb converts electrical energy into light energy and heat energy.
No.it uses energy sources (electrical energy to light up
In a light bulb, electrical energy is transformed into light energy and heat energy.
Most of the energy in a light bulb is heat energy.
light and heat energy occur in a light bulb when it is turned on.
A light bulb gives out light energy and heat energy as forms of energy. The light energy is emitted as visible light, while the heat energy is generated as a byproduct of the bulb's operation.