The figure is made of a uniform wire and represents a regular five pointed star. The resistance of a section EL is 2 ohm. Find the resistance in ohm of the star across F and C. (sin 18º ~ 
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Text Solution
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(2)
Sol.
λ 1 = 2 λ sin 18º = 
R LK = 2 × 
= 
Ω Ω
R FC = 
= 2 Ω Ω
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