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A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by another wire of same material of length 1.5m and diameter 0.155 mm, then the resistance of wire is
Options
(a) 25.2Ω
(b) 0.6Ω
(c) 26.7Ω
(d) 0.8Ω
Correct Answer:
25.2Ω
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A national roadway bridge over a canal is in the form of an arc of a circle of radius
- Two identical thin plano-convex glass lenses (refractive index 1.5) each having
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
- According to Bohr model of hydrogen atom, only those orbits are permissible
- The temperature coefficient of a resistance wire is 0.00125 per degree.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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