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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 capacitor of capacitance 100μF is charged by connecting it to a battery of voltage
- A particle of mass 1.96×10⁻¹⁵ kg is kept in equilibrium between two horizontal metal
- The rest mass of a body is m1. It moves with a velocity of 0.6c, then its relativistic
- The value of workdone for rotating a magnet of magnetic moment M by an angle θ in external
- White light reflected from a soap film (Refractive Index =1.5) has a maxima
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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