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Question: Answered & Verified by Expert
If the Wheatstone's bridge with four resistors $R_1, R_2$ and $R_3, R_4$ is balanced, then the correct expression is

PhysicsCurrent ElectricityTS EAMCETTS EAMCET 2020 (10 Sep Shift 1)
Options:
  • 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 $R_1+R_2=R_3+R_4$
Solution:
2788 Upvotes Verified Answer
The correct answer is: $\frac{R_2}{R_1}=\frac{R_4}{R_3}$


For balance condition of Wheatstone bridge,
$\frac{R_2}{R_4}=\frac{R_1}{R_3} \quad \text { or } \quad \frac{R_2}{R_1}=\frac{R_4}{R_3}$

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