| ⇦ | 
| ⇨ |
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: - Photon of frequency ν has a momentum associated with it. If c is the velocity
- An inclined plane of length 5.60m making an angle of 45⁰ with the horizontal is placed
- A uniform force of (3i + j) newton acfs on a particle of mass 2kg
- A particle is moving such that its position coordinates (x,y) are (2 m,3 m) at time
- Which gate can be obtained by shorting both the input terminals of a NOR gate?
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Photon of frequency ν has a momentum associated with it. If c is the velocity
- An inclined plane of length 5.60m making an angle of 45⁰ with the horizontal is placed
- A uniform force of (3i + j) newton acfs on a particle of mass 2kg
- A particle is moving such that its position coordinates (x,y) are (2 m,3 m) at time
- Which gate can be obtained by shorting both the input terminals of a NOR gate?
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