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1999

Q:

टंगस्टन का प्रतिरोध तापमान के बढ़ने से ?

  • 1
    घटता है
  • 2
    बढ़ता है
  • 3
    कोई परिवर्तन नहीं होता है
  • 4
    ये सभी
  • Show Answer
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Answer : 2. "बढ़ता है"
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.

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