| ⇦ | 
| ⇨ |
Three resistances P,Q,R each of 2Ω and an unknown resistances S form the four arms of a Wheatstone bridge circuit. When a resistance of 6Ω is connected in parallel to S the bridge gets balanced. What is the value of S?
Options
(a) 3Ω
(b) 6Ω
(c) 1Ω
(d) 2Ω
Correct Answer:
3Ω
Explanation:
A balanced wheatstone bridge simply requires P/ Q = R / s 2 / 2 = 2 / S
Therefore, S should be 2Ω. A resistance of 6Ω is connected in parallel. In parallel combination,
1/R = 1/R₁ + 1/R₂
1/2 = 1/6 + 1/S
S = 3Ω
Related Questions: - The displacement of an object attached to a spring and executing simple harmonic
- A satellite A of mass m is at a distance r from the centre of earth. Another satellite
- The dimensions of universal gas constant are
- The temperature at which the vapour pressure of a liquid becomes equal to the external
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The displacement of an object attached to a spring and executing simple harmonic
- A satellite A of mass m is at a distance r from the centre of earth. Another satellite
- The dimensions of universal gas constant are
- The temperature at which the vapour pressure of a liquid becomes equal to the external
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply