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Question

Calculate the effective potential difference for the cells in series given below.


A
20 V
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B
24 V
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C
26 V
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D
25 V
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Solution

The correct option is D 25 V

In the circuit diagram, the cells are connected in series.
In a series connection of cells, the total potential difference will be the sum of potential differences of the individual cells.
Effective potential difference =V1+V2+V3+V4+V5
=5+7+8+4.2+0.8=25 V.


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