What material is the filament made from?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the VetSkill Level 3 Diploma VN02 – Diagnostic Principles Test. Engage with multiple-choice questions, hints, and explanations. Achieve your certification!

Multiple Choice

What material is the filament made from?

Explanation:
Filaments in high-temperature light sources must stay solid and intact while glowing. Tungsten is ideal because it has the highest melting point of any metal—about 3422°C—and a very low vapor pressure at operating temperatures, so it doesn’t evaporate away quickly. It can be drawn into ultra-fine wires and still retain strength when hot, which is essential for a long-lasting filament. The other metals would melt or vaporize far too easily and wouldn’t handle the heat or mechanical stress, making tungsten wire the best choice for a durable, efficient filament.

Filaments in high-temperature light sources must stay solid and intact while glowing. Tungsten is ideal because it has the highest melting point of any metal—about 3422°C—and a very low vapor pressure at operating temperatures, so it doesn’t evaporate away quickly. It can be drawn into ultra-fine wires and still retain strength when hot, which is essential for a long-lasting filament. The other metals would melt or vaporize far too easily and wouldn’t handle the heat or mechanical stress, making tungsten wire the best choice for a durable, efficient filament.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy