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Grade 12Electric Current

Please calculate the value of the f for max heat generation

Question image for Please calculate the value of the f for max heat
Profile image of Yash
6 Years agoGrade 12
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1 Answer

Profile image of Vikas TU
6 Years ago
Hiii 
Heat generated in the r is maximum when the load resistance (which is r here will be equal to Rth )
Rth – stands for thevenin resistance .
Short circuit the voltage source and find equivelent resistance across r load.
now R and R will come in parallel , 
So Rth = r = R/2 
so, f will be ½ 
Hope this helps.
Cheers.