Question

Electrochemical cells are arranged as depicted in the diagram above. What is the total electric potential difference of this battery if each cell has an electric potential difference of 2.0 V? 2.0 V 4.07 6.0 7 8.0 V none of the above

Answer 1

For batteries in series, add up the potential difference across them.

For, batteries in parallel, potential difference is same as each one of them

so,

for upper row, we have two batteries with 2 V potential difference so, total is 2 + 2 = 4 V

for bottom row, also, we have 4 V

but these two rows are in parallel,

so,

total potential difference = 4 V