Question

Arrange "four" cells of 1.5 V each in such a way that total emf is 3V....?

Answer 1

2 group of 2 cells in series are placed in parallel .

Explanation:

I tried to make a sketch

`color(white)(aaaa)` `+` `-` `|vdots` `-` `|vdots` `-`

`color(white)(aaaaaa)` `|` `color(white)(aaaaaaaa)` `|`

`color(white)(aaaaaaa)` `-` `|vdots` `-` `|vdots` `-` `-`

Voltage of 2 cells in series is `=1.5+1.5=3V`

Voltage of 2 sets of `3V` in parallel is `=3V`