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Sheetal had 6 identical cells, each of electromotive force (emf) 4 V and internal resistance 'r'…
Sheetal had 6 identical cells, each of electromotive force (emf) 4 V and internal resistance 'r'. She connected them to an external resistor 'R' in two different arrangements as shown and measured the current as '$I_1$' and '$I_2$' respectively.
If '$I_2$' is found to be greater than '$I_1$', then which relation is true?
- (a)$R > r$
- (b)$R = r$
- (c)$R < r$
- (d)$R = 6r$
Answer
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From ISC 2025 Practice Physics, question 5.