Three resistances of value 4 Ω are connected in the form of an equilateral triangle. The effective resistance between two corners is:
Three resistances each of 4 Ohm are connected in the form of an equilateral triangle. The effective resistance between any two corners 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