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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, respectively, are
  • a)
    – r and E
  • b)
    r and – E
  • c)
    – E and r
  • d)
    E and – r
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A student measures the terminal potential difference (V) of a cell (o...
The terminal potential difference of a cell is given by V + Ir = E
V = VA – VB or V = E – Ir ⇒ dv/dl = -r,
Also for, i = 0 then V = E slope = – r,
intercept = E
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Most Upvoted Answer
A student measures the terminal potential difference (V) of a cell (o...

Explanation:

- Slope:
The slope of the graph between V and I represents the internal resistance of the cell. The internal resistance (r) of a cell is responsible for the decrease in terminal voltage as the current increases. Therefore, the slope of the graph will be equal to -r.

- Intercept:
The intercept of the graph between V and I represents the emf of the cell. The emf (E) of a cell is the maximum potential difference that the cell can provide when no current is flowing through it. Therefore, the intercept of the graph will be equal to E.

Therefore, the correct answer is option 'A': the slope is -r and the intercept is E. This relationship is given by the equation: V = E - Ir, where V is the terminal potential difference, E is the emf of the cell, I is the current flowing through the cell, and r is the internal resistance of the cell.
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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, respectively, area)– r and Eb)r and – Ec)– E and rd)E and – rCorrect answer is option 'A'. Can you explain this answer?
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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, respectively, area)– r and Eb)r and – Ec)– E and rd)E and – rCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about 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, respectively, area)– r and Eb)r and – Ec)– E and rd)E and – rCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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, respectively, area)– r and Eb)r and – Ec)– E and rd)E and – rCorrect answer is option 'A'. Can you explain this answer?.
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