ExamBro
ExamBro
enEnglishhiहिन्दीguગુજરાતી
JEE Mains · Physics · STD 12 - 3. current electricity

એક તારનો \(10^{\circ} C\) અને \(30^{\circ} C\) તાપમાને અવરોધ અનુક્રમે \(2 \,\Omega\) અને \(3 \,\Omega\) મપાય છે. તારના દ્રવ્યનો તાપમાન અવરોધ ગુણાંક..........\(^{\circ}C ^{-1}\) થશે.

  1. A \(0.033\)
  2. B \(-0.033\)
  3. C \(0.011\)
  4. D \(0.055\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(0.033\)

Step-by-step Solution

Detailed explanation

\(R = R _{0}(1+\alpha \Delta T )\) \(3= R _{0}(1+\alpha(30-0))\) \(2= R _{0}(1+\alpha(10-0))\) \(\frac{3}{2}=\frac{1+30 \alpha}{1+10 \alpha}\) \(\alpha=\frac{1}{30}=0.033\)
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app