1.

A number of identical light bulbs are connected to a battery. Will the brightness of bulbs increases or decreases when more bulbs areconnected in a parallel connection ? Will the battery last longer after connecting more bulbs ?

Answer»

Solution :In the parallel COMBINATION of light bulbs, connecting more bulbs in parallel will not affect the brightness of bulbs as VOLTAGE across each BULB still remains same and hence current `I=V/R`, drawn by each bulb will REMAIN same.
but the battery will drain faster in this case as additions current needs to be supplied by the battery in extra parallel BRANCHES in which more light bulbs are added.


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