| ⇦ | 
| ⇨ |
Two metal wires of identical dimensions are connected in series. If σ₁ and σ₂ are the conductivities of the metal wires respectively, the effective conductivity of the combination is
Options
(a) σ₁+ σ₂/σ₁ σ₂
(b) σ₁ σ₂/σ₁+ σ₂
(c) 2σ₁ σ₂/σ₁+ σ₂
(d) σ₁+ σ₂/2σ₁ σ₂
Correct Answer:
2σ₁ σ₂/σ₁+ σ₂
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - The body of mass m hangs at one end of a string of length l, the other end of which
- A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
- A radioactive substance decays to 1/16th of its initial activity in 40 days.
- A source of light is placed at a distance of 50 cm from a photocell and the stopping
- A transistor is working in common emitter mode. Its amplification factor is 80
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The body of mass m hangs at one end of a string of length l, the other end of which
- A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
- A radioactive substance decays to 1/16th of its initial activity in 40 days.
- A source of light is placed at a distance of 50 cm from a photocell and the stopping
- A transistor is working in common emitter mode. Its amplification factor is 80
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