Connecting Electrical cells in series:
1. Take a dry cell and torch bulb. 2. Connect the bulb to a cell using copper wires shown in figure-a. Observe the intensity of light.

3. Now take one more dry cell and connect two cells as shown in figure-b.

4. In this method the positive terminal of the first cell and the negative terminal of the second cell are connected to the bulb.
5. .When the cells are connected in series more electricity flows in the circuit and the bulb glows with greater brightness.