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Two identical 4.00 Ω wires are laid side-by-side and soldered together so they touch each other...

Two identical 4.00 Ω wires are laid side-by-side and soldered together so they touch each other for half of their lengths.

a)What is the equivalent resistance of this combination?

b)if two wires touch each other through their end points, what is equivalent resistance?

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