| ⇦ | 
| ⇨ |
A metal wire of circular cross-section has a resistance R₁. The wire is now stretched without breaking, so that its length is doubled and the density is assumed to remain the same. If the resistance of the wire now becomes R₂, then R₂:R₁ is
Options
(a) (1:1)
(b) (1:2)
(c) (4:1)
(d) (1:4)
Correct Answer:
(4:1)
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - A hemispherical bowl of radius R is rotating about its axis of symmetry
- Three blocks A,B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact
- For an ideal gas of diatomic molecules
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- The rest energy of an electron is
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A hemispherical bowl of radius R is rotating about its axis of symmetry
- Three blocks A,B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact
- For an ideal gas of diatomic molecules
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- The rest energy of an electron is
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply