Question

V240V 500W 'and' 240V - 1000W 'Which of these two electric lamps has thicker filament?​

Answer 1

Answer:

Explanation:

So , if same potential differnce is applied to both the lamps , resistance of the lamp having large power will be less than that of the lamp having less power , Again , larger the cross sectional area (A) of a conducting wire (filament ) , smaller will be its resistance (sinceR∝1A)(sinceR∝1A) . So , the filament of100 W lamp will be thicker than that of 100 W lamp .