JEE Main & Advanced
JEE Main Paper (Held On 9 April 2016)
question_answer
In the circuit shown, the resistance r is a variable resistance. If for r = fR, the heat generation in r is maximum then the value of f is :
JEE Main Online Paper (Held On 09 April 2016)
A)1
B)\[\frac{3}{4}\]
C)\[\frac{1}{4}\]
D)\[\frac{1}{2}\]
Correct Answer:
D
Solution :
to get maximum heat generation from r. \[r={{\operatorname{R}}_{eq}}=R/2\]