Three resistances each of 4 ohm are connected in the form of an equilateral triangle. The effective resistance between any two corners is:
A wire has a resistance of 6 ohms. It is bent in the form of an equilateral triangle. The effective resistance between any two corners of the triangle is
A uniform wire of 16Ω resistance is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance 16 Ω. The effective resistance between the other two opposite corners is