Questions
In the network shown, power dissipated in resistor is 8 Watt. What will be the power dissipated in resistor after the switch S is closed.
detailed solution
Correct option is A
Before S is closed, i12×2=8⇒i1=2A E = emf of the cell =i1×2+3V=2×5V=10voltAfter S is closed power dissipated in 2Ω resistor=E22=1022W=50WattTalk 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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