$1.00 per month
The bulb uses 5 watts of power.
Yes.
The actual cost will depend on the charge by your supplier. It can be calculated by finding the cost of 15% of one unit of electricity (kw hour)
no because it would blow up because the socket would draw 13 watt not 9 watt
fluorescents are about 5x as efficientso a 12W will give about as much light
Almost twice as much as 100 is almost twice 60.
The bulb uses 5 watts of power.
A 75 bulb will use more electricity.
Yes.
A lot
The actual cost will depend on the charge by your supplier. It can be calculated by finding the cost of 15% of one unit of electricity (kw hour)
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.
No, you can not use a 150 watt high pressure sodium bulb with a 70 watt ballast.
The highest watt headlight bulb you can use in a 2000 Mazda 323 is 65 watts. Most vehicles use a 55 watt bulb.
If you dont mind splodey light bulb.
In 100 hours it will use 6 kilowatt-hours (units) of electrical energywhich would cost around £1 or $1.
A 40 watt bulb is dimmer than a 100 watt bulb.