This is simple maximum power transfer theorem which says if internal resistance is equal to load resistance then the power transformed will be max.so the answer will be R=0.5
a battrry of emf 10V and internal resistance 0.5 ohms is connected across a variable resistance R. What is the value of R for which the power delivered in it is maximum?

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2 Answers
Akash Anand
·20140625 00:49:53
@Sohini: If you dont know the concept of Maximum Power Transfer Theorem, then simply find the expression for power and apply MaximaMinima. You will get this.
 Sushovan Halder sir what is the concept of Maximum power transfer theorem?Upvote·0· Reply ·20140630 09:53:23
Amartya Kumar Mistry
·20140623 03:14:33