A 100 watt bulb uses 100 watt-hours in one hour. In standard energy units, that is 0.1 kilowatt-hours.

The energy used each hour is 60 watt-hours.

A 60 Watt bulb uses a power of 60 Watts as long as it is switched on. Power is the rate of converting energy. In one hour, the energy used is 60 Watt-hours. One Watt-hour is an amount of energy equal to 3600 Joules.

A 60 watt bulb uses 60 joules per second, or 21 kilojoules per hour.

It takes 60 watt-hours. Same as lighting a 1-watt bulb for 60 hours; or 60 bulbs of 1 watt each for 1 hour. You get the idea.Notice the units: watt-hours, not watts. Watt is a unit of power, watt-hour is a unit of energy. 1 watt-hour = 0.001 kWh (kilowatt-hour) = 3600 joules = 860 calories = 3.4 BTU.

The bulb takes a power measured in watts. Each hour it uses energy equal to that number of watts, as watt-hours. A 60 W bulb uses 60 watt-hours in 1 hour, or 600 watt-hours in 10 hours.

The bulb's power, 75 watts, is the power it uses continuously all the time it is switched on. The energy it uses can be measured in watt-seconds (Joules) or in watt-hours. A 75 watt bulb uses 75 watt-hours each hour, which is 0.075 kilowatt-hour.

It uses 60 joules of energy every second, which is 60 watt-hours or 0.06 kilowatt-hours every hour.

energy is energy It does not matter what you are using the energy for, it matters how much energy you are using A 200 watt light bulb uses more energy than a 100 watt light bulb A 200 watt motor uses more energy than a 100 watt light bulb A 200 watt heater uses more energy than a 100 watt light bulb

A 25 watt light bulb consumes 25 watts per hour. Watts are the unit of power, and 1 Watt = the conversion of I joule of energy per second so a 25W lamp is using 25J/s of energy.

If the bulb is not being used, 50 watt-hours are wasted, which is 0.05 of a kilowatt-hour, or 0.05 units. In Joules it is 50 x 3600, or 180,000 Joules.

Not quite as much, about the same as an 80-watt normal bulb. But a 20-watt energy-saving bulb is as bright as a 100 watt normal bulb.

That bulb is 100 watts or 0.1 kilowatts so it uses 0.1 kilowatt-hour of energy each hour, which costs about £0.015

Look at the watt rating printed on the bulb, then multiply by the number of hours it runs for, the answer is the energy in watt-hours.

yes, much brighter than 160 watt incandescent bulb. LED bulbs are much more efficiency in energy.

It uses 48 watt-hours each hour. In 20 hours and 50 minutes it uses 1 kilowatt-hour or 1 unit of electrical energy, which costs about £0.15

Typical home energy cost is 10 cents per kilowatt hour A 60 watt bulb running for one hour uses 60 watt hours .10 X (60/1000) = .006 cents per hour 16.66 60watt bulbs on for one hour would cost 10 cents.

A 250 watt light bulb takes 250 watts of power. The energy it uses (that you pay for) is measured in watt-hours or kilowatt-hours. A 250-watt bulb running for 4 hours uses 1 kilowatt-hour.

A 1-watt bulb uses 3600 watt-hours every hour, which is 1/1000 of a kilowatt-hour, so the cost is 0.01 cents.

"Kilowatt" is a rate of using energy. It's not an amount of anything.A 60-watt bulb uses energy at the rate of 60 watts ... the same as 0.06 kilowatts.In one hour, it uses 60 watt-hours of energy ... the same as 0.06 kilowatt-hours.

60 watt-hours 0.06 kilowatt-hour (60 watt-hour) x (3,600 sec/hour) = 216,000 watt-seconds 216,000 joules

1200 watts for 15 minutes = 300 watt-hours100 watts for 1 hour = 100 watt-hoursTotal = 400 watt-hours = 0.4 kilowatt-hour of electrical 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.

A power of 1000 watts is one kilowatt, so in one hour the energy used is one kilowatt-hour, also known as one Unit.

An incandescent nightlight bulb is either 4 watt or 7 watt. A 4 watt bulb uses 1/25th (0.04) the power of a 100 watt bulb. A 7 watt bulb uses 7/100th (0.07) the power of a 100 watt bulb. There are LED and other types of nightlights that use much less power than this. To find the energy total used multiply the power (in watts) by the total time the light is on (in hours) to get energy (in Wh). If you want kWh divide this by 1000 as a watt is 1/1000th of a kW.

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