COMEDK · Physics · 19. Current Electricity
A student measures the terminal potential difference \(V\) of a cell of \(\operatorname{emf} \varepsilon\) and internal resistance \(r\) as a function of the current I flowing through it. Which of the following graphs will give the values of emf \(\varepsilon\) and internal resistance \(r\) ?
- A \(1\)
- B \(4\)
- C \(2\)
- D \(3\)
Answer & Solution
Correct Answer
(A) \(1\)
Step-by-step Solution
Detailed explanation
The terminal potential difference \(V\) of a cell with emf \(\varepsilon\) and internal resistance \(r\) is given by the equation \(V = \varepsilon - Ir\). This equation represents a linear relationship between \(V\) and \(I\), which can be written in the form \(y = mx + c\) as…
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