Question

A network contains linear resistors and ideal voltage source S. If all the resistors are made twice their initial value, then voltage across each resistor is __________

(a) Halved

(b) Doubled

(c) Increases by 2 times

(d) Remains same

This question was posed to me in an interview for internship.

My question comes from Advanced Problems on Two Port Network in chapter Two-Port Networks of Network Theory

Answer 1

The correct answer is (d) Remains same

To explain: The voltage/resistance ratio is a constant (say K). If K is doubled then, electric current will become half. So voltage across each resistor remains same as was initially.