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, is equal to:
1. \(E\) and \(-r\)
2. \(-r\) and \(E\)
3. \(r\) and \(-E\)
4. \(-E\) and \(r\)
Subtopic: Â EMF & Terminal Voltage |
 69%
From NCERT
AIPMT - 2009
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A cell of emf \(4~\text{V}\) and internal resistance \(0.5~\Omega\) is connected to a \(7.5~\Omega\) external resistance. The terminal potential difference of the cell is:
1.
\(3.75~\text{V}\)
2.
\(4.25~\text{V}\)
3.
\(4~\text{V}\)
4.
\(0.375~\text{V}\)
Subtopic: Â EMF & Terminal Voltage |
 70%
From NCERT
NEET - 2022
Other Reason
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