A potentiometer circuit has been set up for finding the internal resistance of a given

⇦

⇨

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery, used across the potentiometer wire, has an emf of 2.0V and a negligible internal resistance. The potentiometer wire itself is 4m long. When the resistance R connected across the given cell, then has values of
(i) infinity (ii) 9.5Ω
The balancing lengths of the potentiometer wire are found to be 3m and 2.85m, respectively. The value of internal resistance of the cell is

Options

(a) 0.25Ω
(b) 0.95Ω
(c) 0.5Ω
(d) 0.75Ω

Correct Answer:

0.5Ω

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

1. A radioactive substance contains 10000 nuclei and its halflife period is 20 days
2. The ratio of speed of an electron in ground state in Bohr’s first orbit of hydrogen atom
3. For a satellite moving in an orbit around the earth, the ratio of kinetic
4. A body weighs 50 grams in air and 40 grams in water. How much would it weigh in a liquid
5. The potential differences across the resistance, capacitance and inductance

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