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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 body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
- The refractive index of water, glass and diamond are 1.33, 1.50, 2.40 respectively
- If a solid ball of metal has a concentric spherical cavity with in it if the ball
- Two simple harmonic motions of angular frequency 100 and 1000 rad s⁻¹ have the same
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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