An Electric Current Through a Tungsten Filament Maintains Its Temperature

question 6

Multiple Choice

An electric current through a tungsten filament maintains its temperature at 2800 K. Assume the tungsten filament behaves as an ideal radiator at that temperature. Near what wavelength does the filament emit the greatest power? (σ = 5.67 × 10-8 W/m² ∙ K⁴, Wien displacement law constant is 2.9 × 10^-3 m ∙ K)

• A) 1000 nm
• B) 1200 nm
• C) 1400 nm
• D) 1600 nm
• E) 1800 nm

---

Definitions:

Chlamydia

A sexually transmitted disease caused by a bacteria that lives as an intracellular parasite.

Gonorrhea

A sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae, often resulting in infections of the genital tract, rectum, and throat.

Urinary Tract Infections

Infections that occur in any part of the urinary system, including the bladder, kidneys, ureters, and urethra, often causing pain and urgency in urination.

Premenstrual Syndrome

A group of symptoms that occur in women, typically between ovulation and a period, including mood swings, tender breasts, food cravings, fatigue, irritability, and depression.