| ⇦ | 
| ⇨ |
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: - Water rises in a vertical capillary tube up to a height of 2.0 cm.
- A particle moves along the x-axis from x=0 to x=5 m under the influence of a force
- The energy of groundstate (n=1) of hydrogen level is -13.6 eV. The ionistation
- A piece of iron is heated in a flame. It first comes dull red then becomes reddish
- A particle moves in a straight line with a constant acceleration
Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Water rises in a vertical capillary tube up to a height of 2.0 cm.
- A particle moves along the x-axis from x=0 to x=5 m under the influence of a force
- The energy of groundstate (n=1) of hydrogen level is -13.6 eV. The ionistation
- A piece of iron is heated in a flame. It first comes dull red then becomes reddish
- A particle moves in a straight line with a constant acceleration
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