Question

Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature, 100w,60w and 40w bulbs have filament resistances R100, R60and R40 respectively, the relation between these resistances is

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Answer 1

Explanation:

Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature, 100w,60w and 40w bulbs have filament resistances R100, R60and R40 respectively, the relation between these resistances is

Answer 2

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