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Resistance of 50W bulb is greater than that of 100W bulb Reason resistance in inversee proportion to power

Answer»

istance of a CURRENT CARRYING conductor is inversely proportional to the area of cross section of the conductor. Th reason is because the resistance occurs due to the collision of ELECTRONS/charged particles. When area of cross section of the conductor increases, the gap between electrons increases.Power is not a direct function of resistance. It is a function of (that is, it VARIES with) Voltage and Current. Resistance comes into the picture only because of Ohm's law. P is inversely proportional to R as voltage is constant in the CIRCUIT.



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