A circuit constrains one light bulb and one battery. What happens to the total resistance in the circuit if you replace one light bulb with a string of four identical bulbs? Why?

Question

Physics

Lena Dodson

30 October, 17:48

A circuit constrains one light bulb and one battery. What happens to the total resistance in the circuit if you replace one light bulb with a string of four identical bulbs? Why?

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Answers (1)

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Alessandra Vincent · Answer 1

- - If the four light bulbs are in series, then the total resistance becomes four times as much as it was with a single bulb, because now, the current has to push through one light bulb four times.

- - If the four light bulbs are in parallel, then the total resistance becomes 1/4 as much as it was with a single bulb, because now, the current can split up into four equal streams, and each stream only has to push through a single light bulb.