Bulb Flashlight

Bulb Flashlight
What is the temperature of a filament bulb when powered flashlight?

A common light bulb is estimated at 0.2 and 2.9 V. If the resistance tungsten light bulb filament at room temperature (20 ° C) is 1.10Ω, the estimated temperature of the tungsten filament when the bulb is lit.

I would try this. Calculate the nominal resistance using E = IR (to solve R). Assume that the increased resistance of tungsten is linear (in the range interest). Form a ratio of resistance at room temperature / ambient temperature in degrees Kelvin (absolute temperature use) = score resistance / temperature unknown x. Convert x degrees C. Good luck.

	3-In-1 Flashlight Nitelite Emergency Light Sale Price: $11.99 Average Rating:
	3 in 1 - LED Night Light, LED Emergency Light and LED Flashlight; Length: 4.0". The Night Light has an Automatic Sensor which allows On at Dusk and Off at Dawn. The Emergency Light features an 8 Hour Battery Back Up...

	Duracell Garrity Rechargeable LED flashlight with Night light List Price: $19.12 Sale Price: $9.37
	Duracell Garrity Rechargeable LED flashlight with Night light automatically lights when power fails.It has 13 hours battery life.

	Sylvania 72170 LED Generation II Powerfailure Emergency Back-Up Light List Price: $12.99 Sale Price: $10.99 Average Rating:
	3 LED Night Light Power Failure Powerlite Sylvania Flashlight with Emergency Back-Up Light

	40 Super Bright Finger Flashlights - LED Finger Lamps - Rave Finger Lights List Price: $26.95 Sale Price: $19.95 Average Rating:
	You will find hundreds of uses for these lights. Uses 3 AG10 batteries included. Super Bright, Long Life. Hook & Loop Straps to fit Fingers, Pens, pencils, Tools, etc. Push button ON/OFF.

	Duracell Garrity LED Stainless Steel Pen Light (Pack of 2) List Price: $17.81 Sale Price: $13.70 Average Rating:
	Duracell garrity LED stainless steel pen light, non corrosive with push button switch with lifetime guarantee.

	Energizer Aluminum Pen LED Flashlight, Two AAA Batteries (PLED23AE) List Price: $11.49 Sale Price: $6.04 Average Rating:
	EVEPLED23AEH Bright lifetime Nichia LED light. Durable aluminum body stands up to falls and rough handling. Small enough to fit in your pocket. Push-button switch allows one-handed operation. Clips easily to pocket, tool bag or briefcase...

	Pelican PC2404 Replacement Xenon Lamp List Price: $34.44 Sale Price: $7.84
	Xenon lamp for Pelican 2400C or 2450C

	Princeton Tec Surge/torrent Xenon Bulb List Price: $0.00 Sale Price: $7.79
	Princeton Tec Surge/torrent Xenon Bulb Impact Resistant Easy To Grip Xenoy Housing. Proprietary Optics For Maximum Output. Rugged Lock-out Switch Design With Two O-ring Seals. Power: 95 Lumens (led), 115 Lumens (xenon)...

	Coleman 4D Dual Action WideBeam Flashlight List Price: $19.99 Sale Price: $19.99 Average Rating:
	The Coleman 5308-700 Widebeam 4D Dual-action Flashlight provides a bright, portable light for any occasion. This dual-action flashlight has a regular path light that gives you a center-spot of light with a softer perimeter of light, plus a seven-watt U-tube fluorescent area light to brighten a work area...