Get Started
1998

Q:

Tungsten resistance to temperature rise?

  • 1
    decreases
  • 2
    increases
  • 3
    there is no change
  • 4
    All these
  • Show Answer
  • Workspace

Answer : 2. "increases"
Explanation :

At high temperatures, the tungsten filament gets hot and atoms in the filament vibrate more. The electrons in the current now collide more with the atoms & more energy is needed to push the current through the filament. Hence, the resistance of tungsten increases with temperature.

The Most Comprehensive Exam Preparation Platform

Get the Examsbook Prep App Today