PhysicsNEET 2021Kirchhoff's rules, Wheatstone bridge, potentiometer

Current Electricity

Three resistors having resistances $r_{1}$ , $r_{2}$ and $r_{3}$ are connected as shown in the given circuit. The ratio $\frac{i _{3}}{i _{1}}$ of currents in terms of the resistances used in the circuit is:

Question 38 as printed in the NEET 2021 booklet

A. $\frac{r _{1}}{r _{2} + r _{3}}$
B. $\frac{r _{2}}{r _{2} + r _{3}}$ ✓
C. $\frac{r _{1}}{r _{1} + r _{2}}$
D. $\frac{r _{2}}{r _{1} + r _{3}}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Current Electricity

More from this chapter in past papers