| ⇦ | 
| ⇨ |
A student measures the terminal potential difference (V) of a cell (of emf E and internal resistance r) as a function of the current (I) flowing through it. The slope and intercept, of the graph between V and I, then, respectively, equal:
Options
(a) – r and E
(b) r and – E
(c) – E and r
(d) E and -r
Correct Answer:
– r and E
Explanation:
The terminal potential difference of ao ocell is given by V + Ir = E V = Vₘ – Vₙ
or V= E – Ir
dV/ dI = – r, Also for i= 0 then V = E
slope = – r, intercept = E
Related Questions: - The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- A spherical body of emissivity e=0.6, placed inside a perfectly black body is maintained
- The rate of increase of thermo-e.m.f. with temperature at the neutral temperature
- The angular momentum of an electron is J. The magnitude of the magnetic moment
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The ionisation energy of hydrogen is 13.6 eV. The energy of the photon released
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- A spherical body of emissivity e=0.6, placed inside a perfectly black body is maintained
- The rate of increase of thermo-e.m.f. with temperature at the neutral temperature
- The angular momentum of an electron is J. The magnitude of the magnetic moment
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