| ⇦ | 
| ⇨ |
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: - The electric potential V at any point (x,y,z) all in meters in space is given by
- A car of mass m is moving on a level circular track of radius R
- The ultimate individual unit of magnetism in any magnet is called
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- Two small spherical shells A and B are given positive charges of 9C and 4C
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The electric potential V at any point (x,y,z) all in meters in space is given by
- A car of mass m is moving on a level circular track of radius R
- The ultimate individual unit of magnetism in any magnet is called
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- Two small spherical shells A and B are given positive charges of 9C and 4C
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