We can connect the bulbs in the series or parallel according to the desired application. The lumen that the bulb counts on the existing flowing with the pear element.The heating effect depends ~ above the current and also the resistance the the bulb. The heat developed by the bulb is proportional come the product that the square of the current and the resistance.

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Therefore, a 50-watt bulb will certainly glow brighter than a 100-watt pear when associated in the series.