First slide

Cell

Question

A battery consists of a variable number n of identical cells having internal resistance connected in parallel. The terminals of the battery are short circuited and the current / is measured. Which one of the graph below shows the correct relationship between I and n?

Moderate

A
B
C
D

Solution

If n batteries are in parallel than the circuit can be made as $I = \frac{nE}{r}$
i is directly proportional to n.

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