Question

What is the total EMF when three cells of voltages 1v, 2.5v, 3.5v are connected in a series?

Answer 1

Answer:

The total EMF when three cells of voltages 1v, 2.5v, 3.5v is 10 volts

Explanation:

In a series connection, the total voltage(e.m.f) will be the sum of all the volts of the cells connected in that series

          i.e Total e.m.f = (1+2.5+3.5)v

                                 = 10 volts

Answer 2

The total EMF will be 7volts.

Potentials get added for a series connection.

So, as mentioned in the question the three cells are connected in series.

Then, Net EMF will be equal to EMF across first cell + EMF across 2nd cell +EMF across 3rd cell.

Hence,

Total EMF = 1v + 2.5v +3.5v = 7v

Tip : Charge flowing through a series connection is same .