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8 July, 00:58

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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  1. 8 July, 01:14
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    - - 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.
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