Network Theory - GATE 2012 EC Solved Problem

Kirchhoff’s laws, along with Ohm’s law, form the basis of circuit theory. The equivalent resistance of any number of resistors connected in series is the sum of the individual resistances. The equivalent resistance of two parallel resistors is equal to the product of their resistances divided by their sum. Passive component consumes energy. As the circuit is extended until infinite long with the combination repeated; so found the equivalent resistance based on the roots of the quadratic equation constructed from its equivalent circuit. For more details you can refer https://b-ok.asia/book/3630033/1633c7 Network Analysis by M.E. Van Valkenburg