Questions
A 100 W bulb B1, and two 60 W bulbs B2 and B3, are connected to a 250 V source as shown in fig. Now
W1,W2, and W3 are the output powers of the bulbs B1,B2 and B3, respectively. Then
detailed solution
Correct option is D
It is obvious that voltage across B3 is greatest and hence it glows brightest. In series connection, bulb of lesser wattage will glow brighter. HenceW2 >W1.SoW1Talk to our academic expert!
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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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