$40.00 a year
It's a halogen bulb
Yes, the halogen bulb would provide about 30% more brightness (lumens) for the same electric power rating. So 70 watt halogen is about equal to 90-100 watt incandescent.
$1.00 per month
A 20 watt incandesent bulb is dim. For a medium sized room you need 100 watts. A 20 watt halogen bulb is brighter but still quite dim. These are marketed as low-energy but they are not. For a medium sized room you need 80 watts. A 20 watt fluorescent bulb can light a medium sized room quite brightly. This is a genuine low energy bulb.
No. Only replace lamps in a fixture that the manufacturer of the fixture recommends. By installing larger than recommended lamps this could create a fire due to the increase of heat generated by the over size lamp.
Yes. It just won't be as bright.
Halogen bulbs are about 30% more efficient so a 70 watt halogen does the job.
It's a halogen bulb
Approximately 15 lumens per watt for halogen, so 300 lumens.
Yes, the halogen bulb would provide about 30% more brightness (lumens) for the same electric power rating. So 70 watt halogen is about equal to 90-100 watt incandescent.
No, it will not be. You will need at least a 50 watt halogen for outdoor lighting.
A halogen bulb IS ITSELF a type of incandescent illumination source. A 40 Watt traditional incandescent bulb usually emits about 400 to 500 lumens while a halogen may emit close to twice that. So a 25 W halogen might give out as much light as ah older style 40 W bulb.
Almost twice as much as 100 is almost twice 60.
Strictly the power in watts measures how much energy is used, while the brightness is measured in lumens. Bulb packaging should carry that information. But 'equivalents' are a useful way for manufacturers to bamboozle customers, so halogens often carry an 'equivalent wattage' figure, which means the power of an ordinary old incandescent bulb of the same brightness. If you had a 100 watt old-fashioned bulb, that is replaced by a 70 watt halogen. It could also be replace by a 20 watt CFL bulb that is obviously less expensive to run and lasts much longer.
A 0 Watt bulb does not consume electric power so the cost is zero.
Probably a 50 watt halogen
A halogen bulb works equally well with AC or DC.