| ⇦ | 
| ⇨ |
Two cells, having the same e.m.f. are connected in series through an external resistance R. Cells have internal resistances r₁ and r₂ (r₁ > r₂) respectively. When the circuit is closed, the potential difference across the first cell is zero. The value of R is
Options
(a) r₁ + r₂
(b) r₁ – r₂
(c) r₁ + r₂/2
(d) r₁ – r₂/2
Correct Answer:
r₁ – r₂
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions:
- Two point white dots are 1 mm apart on a black paper.
- The given graph represents V-I characteristic for a semiconductor device
- If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
- The electric potential V at any point (x,y,z) all in meters in space is given by
- Perfectly black body radiates the energy 18 J/s at 300K. Another ordinary body of e=0.8
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