Question

A dry cell stops working when the chemicals in it get used up.
Electric current is taken to flow from the negative terminal of
the (electric) cell to the positive terminal of the cell.
We need to complete the relevant electric circuit to enable an
electric device to work.
3.
4.
Button cells are used in wrist watches.
We can use a polyster thread, in place of metal wires,
to complete an electrical circuit.​

Answer 1

Answer:

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An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions.

your explanation is right