# data[].attributes.body
1) a. The brightness on the light-bulb increased
b. Ohm's law says when V increases and the R stays the same, the I also increases.

2. The brightness starts to decrease as we add a second bulb.

3) a. Both light-bulbs go out
b. This happens, because its a series circuit.

4. After the third light-bulb was added the brightness became even dimmer.

5. This is a series circuit

6. The brightness of the light-bulbs in the parallel circuit were much brighter compared to the light-bulbs in the series circuit.

7. If one light-bulb is unscrewed the other light-bulb stays lit up.

8. This is a parallel circuit.