| ⇦ | 
| ⇨ |
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: - A particle is released from rest from a tower of height h, i.e,t₁ : t₂ : t₃ is
- A p-n photodiode is made of a material with a band gap of 2.0 eV
- When there is no heat change from surroundings in a system, then the process
- The nuclear fusion reaction between deutrium and tritium takes place
- If the r.m.s. velocity of a gas is v, then
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle is released from rest from a tower of height h, i.e,t₁ : t₂ : t₃ is
- A p-n photodiode is made of a material with a band gap of 2.0 eV
- When there is no heat change from surroundings in a system, then the process
- The nuclear fusion reaction between deutrium and tritium takes place
- If the r.m.s. velocity of a gas is v, then
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