Questions
A 100 W bulb B1 and two 60 W bulbs B2 and B3 are connected to a 250 V source, as shown in the figure. Now W1, W2 and W3 are the output powers of the bulbs B1, B2 and B3, respectively. Then
detailed solution
Correct option is D
P=V2R so R=V2P ⇒ R1 = V2100 and R2=R3=V260Now W1 =2502R1+R22. R1, W2 =2502R1+R22. R2and W3 =2502R3W1 : W2 : W3 = 15 : 25 : 64 or W1 < W2 < W3Talk 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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