A network of resistors has a pair of input terminals AB connected to a dc supply and a pair of output terminals CD connected to a load resistor of 120 ohm. The resistances of the network are AC=BD =180 ohm, and AD=BC=80 ohm. Find the ratio of the current in the load resistor to that taken from the supply.
The Attempt at a Solution
I have tried to figure out a model network having the same resistance describe in the question but failed. Several other attempts are also in vain. The model answer is 5.