Question

Four wires of equal length and of resistances $10ohms$ each are connected in the form of a square.The equivalent resistance between two opposite corners of the square is

• A. $10ohm$
• B. $40ohm$
• C. $20ohm$
• D. $10/4ohm$

Answer 1

The correct option is A $10ohm$

Here we have two parallel arms, each having series combination of two $10\Omega$ resistors.

So net resistance is, $(10+10)/2=10\Omega$