Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

The Wheatstone bridge is an arrangement of four resistances, say $R_1, R_2, R_3$ and $R_4$. The null point condition is given by:

Options:

$R_1/R_2=R_3/R_4$

$R_1+R_2=R_3+R_4$

$R_1-R_2=R_3-R_4$

$R_1×R_2=R_3×R_4$

Correct Answer:

$R_1/R_2=R_3/R_4$

Explanation:

The correct answer is Option (1) → $R_1/R_2=R_3/R_4$

In a Wheatstone Bridge, the null point (Balanced point) is achieved when,

$\frac{R_1}{R_2}=\frac{R_3}{R_4}$