Physics-Wheatstone Bridge
NEET Physics Wheatstone Bridge MCQ Question
Type: MCQ-numerical-Easy-Class 12
If a Wheatstone bridge is balanced and the resistances are R1 = 10 Ω, R2 = 15 Ω, and R3 = 20 Ω, what should be the value of R4?
A
30 Ω
B
25 Ω
C
35 Ω
D
20 Ω
Correct Answer
Option A
Detailed Explanation
In a balanced Wheatstone bridge, the balance condition is R1/R2 = R3/R4. Substituting the given values, 10/15 = 20/R4. Solving for R4 gives R4 = 30 Ω.
Found an issue with this question?
Related Questions
More from
Consider a diagram showing a rectangular slab of length \( l \) and area of cross-section \( A \). If the resistance \( R \) of the slab is given by t...
(general)Physics
Assertion (A): The equivalent emf of two cells in parallel is the sum of their emfs divided by the sum of their internal resistances. | Reason (R): Th...
Ohm's LawPhysics
Which of the following statements best defines when a conducting material obeys Ohm's law?
Ohm's LawPhysics