Question

A metal wire of resistance 3Ω is elongated to make a uniform wire of double its previous length. The new wire is now bent and the ends joined to make a circle. If two points on this circle make an angle 60º at the centre, the equivalent resistance between these two points will be:
(A) (12/5)Ω
(B) (5/3)Ω
(C) (5/2)Ω
(D) (7/2)Ω

Answer 1

Answer:

(C) (5/2) ohom. that is right answer.

Answer 2

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A metal wire of resistance 3Ω is elongated to make a uniform wire of double its previous length. The new wire is now bent and the ends joined to make a circle. If two points on this circle make an angle 60º at the centre, the equivalent resistance between these two points will be:

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step by step explanation

refer to the attachment

correct option is b) 5/3 ohm