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Question
Choose the correct alternative.
Five dry cells each of voltage 1.5 V are connected as shown in the diagram
What is the overall voltage with this arrangement?
Options
0 V
4.5 V
6.0 V
7.5 V
Solution
4.5 V
Explanation
4 cells are in same direction so voltage = `4 xx 1.5`
1 cell in opposite direction so voltage = `1 xx 1.5`
total voltage = voltage in same direction- voltage in opposite direction
= `4 xx1.5` - `1 xx 1.5`
= `1.5(4-1)`
= `1.5 (3)`
= `4.5`
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