So if I have two light bulbs with different wattage how could I show what happens to them in series and parallel. The voltage remains the same.

Answer 1

When the bulbs are connected in parallel, the voltage across the bulbs
are equal. The bulb with the highest wattage rating draws the most current.

When the bulbs are connected in series, the same current flows through each bulb. However, it is difficult to
calculate the voltage rop across each
bulb because of the non-linearity of
their resistance. The bulb with the
highest wattage rating will have the
lowest voltage across it.