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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 6 volt battery is connected to the terminals of a three metre long wire of uniform
- The drive shaft of an automobile rotates at 3600 rpm and transmits 80 HP
- Weight of a body of mass m decreases by 1% when it is raised to height h
- An electron of a stationary hydrogen atom passes from the fifth energy level to
- The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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