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1. a) The brightness of the light bulb increased when another battery was added

b) Ohm’s law predicted this because when the voltage increased the current increased as well

2. The brightness when another light bulb was added stayed the same when there

was 2 batteries stayed the same

3. When one was unscrewed the brightness of the one which was still screwed stayed the same. This happened because the power source to the other lightbulb did not change.

4. The 3rd bulb barely lit up.

5. This is a parallel circuit.

6. These bulbs are more dim

7. The other bulb brightens

8. This is a circuit