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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
- In a potentiometer experiment two cells of e.m.f. E₁ and E₂ are used in series
- In Young’s double silt experiment, 12 fringes are observed to be formed
- A ball is moving in a circular path of radius 5 m.If tangential acceleration
- The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second
- In the Young’s modulus experiment, if length of wire and radius both are doubled,
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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