Questions
Three 60 W, 120 V light bulbs are connected across a 120 V power source. If resistance of each bulb does not change with current, then find out total power delivered to the three bulbs.
detailed solution
Correct option is C
Here R=V2P, Total power supplied=V23/2R = 23 V2R = 23 × 60 = 40 WTalk 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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