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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
- At absolute temperature, the kinetic energy of the molecules
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- If the distance between the plates of two capacitor is increased then capacitance
- In which process, the P-V indicator diagram is a straight line parallel to volume
- An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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