Question

If the Wheatstone's bridge with four resistors $R _{1}, R _{2}, R _{3}, R _{4}$ is balanced then the collect expression is

• A. $\frac{R_{2}}{R_{1}}=\frac{R_{4}}{R_{3}}$
• B. $\frac{R_{2}}{R_{3}}=\frac{R_{1}}{R_{4}}$
• C. $R_{1} R_{2}=R_{3} R_{4}$
• D. $R_{1}+R_{2}=R_{3}+R_{4}$

Answer 1

Answer: (A)

For balance condition of Wheatstone bridge,
$\frac{R_{2}}{R_{4}}=\frac{R_{1}}{R_{3}} $
or $\frac{R_{2}}{R_{1}}=\frac{R_{4}}{R_{3}}$