Questions
Two electric bulbs have tungsten filament of same length. If one of them gives 60 watt and other 100 watt, then
detailed solution
Correct option is A
R∝1PHence resistance of 60 watt bulb will be more than resistance of 100 watt bulbFurther R=ρ1πr2 or R∝1r2So, the radius of 1o0 watt bulb will be more than 60 watt bulb, Hence 100 watt bulb has thicker filament.Talk to our academic expert!
Similar Questions
A resistor R is connected across a battery of emf 12 V. It observed that terminal potential differenceis 9 V and the power delivered to resistor is 18 W. Internal resistance of the battery ‘r’ and the resistance R are respectively
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