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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 circular disc of radius R is removed from a bigger circular disc of radius 2R
- A particle moves in a circle of radius 5 cm with constant speed and time period
- A transformer having efficiency of 90% is working on 200 V and 3kW power supply
- A circular disc rolls down an inclined plane.The ratio of rotational kinetic energy
- If the image formed by a convex mirror of focal length 30 cm is a quarter of the size
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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