Question

Q.No.15. The group of cells
joined in series is called?​

Answer 1

Answer:

A collection of two or more cells which are connected in series is called A Battery. A battery is an energy source that converts chemical energy to electrical energy. It is otherwise known as Electrochemical Cell. The energy is stored in the form of chemical energy inside a battery.

This answer may be helpful

Answer 2

Answer:

series combination

I=same V=different