| ⇦ | 
| ⇨ |
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: - Energy in a current carrying coil is stored in the form of
- In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
- The energy of the em waves is of the order of 15 keV. To which part of the spectrum
- what should be the velocity of an electron so that its momentum becomes equal
- A black hole is an object whose gravitational field is so strong that even light
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Energy in a current carrying coil is stored in the form of
- In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
- The energy of the em waves is of the order of 15 keV. To which part of the spectrum
- what should be the velocity of an electron so that its momentum becomes equal
- A black hole is an object whose gravitational field is so strong that even light
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