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A wire having resistance 12Ω is bent in the form of an equilateral triangle. The effective resistance between any two corners of the triangle will be
Options
(a) 6Ω
(b) 8/3Ω
(c) 9Ω
(d) 12Ω
Correct Answer:
8/3Ω
Explanation:
As resistance, R ∝ length
.·. Resistance of each arm = 12 / 3 = 4 Ω
So, effective resistance between any two corners,
Reff = (4×8) / (4+8) = 32 / 12 = (8/3) Ω
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
- The force F acting on a particle of mass m is indicated by the force-time graph
- A freely suspended bar magnet aligns itself in
- The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols
- The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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