Adding light bulbs in series decreases overall brightness due to increased resistance, as per Ohm's Law.
As more light bulbs are added to a circuit in series, the overall brightness of the bulbs decreases. This is because the total resistance in the circuit increases, leading to less current flowing through each bulb, resulting in dimmer light.
This decrease in brightness is due to Ohm's Law, which states that as resistance increases, current decreases, leading to reduced brightness. When light bulbs are added in parallel, the brightness remains more constant as each bulb still receives the full voltage.
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