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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
- The masses of two radioactive substances are same and their half lives
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- The maximum and minimum magnitudes of the resultant of two vectors
- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
- If both the resistance and the inductance in an LR AC series circuit 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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