MENU

Three resistances P,Q,R each of 2Ω and an unknown resistances S form the four arms

Three Resistances Pqr Each Of 2 And An Unknown Resistances Physics Question

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:

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:

  1. An aicraft executes a horizontal loop of radius 1 km with a speed of 900 kmh⁻¹
  2. A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
  3. The wave function (in SI unit) for a light wave is given as Ψ(x,t)= 10³ sin π
  4. A particle moves with constant speed v along a circular path of radius r and completes
  5. Maximum range for a projectile motion is given as R. The maximum height will be

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*