How does the type of circuit affect the strand of Christmas lights with a burned out bulb?

I.V.-Wire

D.V.-Broken light

If the Christmas lights are arranged in a parallel circuit then when 1bulb burst the other bulbs will not light up.

I observed that when one light bulb is cut out then the rest of the bulbs will not work.

I observed that the battery caught on fire.

If the Christmas lights are arranged in a series circuit then when one bulb burst the other will light up.

I observed that all the lights work. All function correctly.

if you take one light out of the circuit then the other lights will stay on.

I observed that the lights stays on if one is taken out. The battery does not catch fire.

I believe that the series circuit is the best to use for Christmas lights. I believe this because it is simple and easy. A lights are together and easy to handle.

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