Question

Please solve it guys.................. ​

Answer 1

Let the resistances be R1andR2

So S=R1+R2

P=R1R2R1+R2

S=nP

R1+R2=nR1R2R1+R2

(R1+R2)2=nR1R2

Minimum occurs for R1=R2 and the minimum value is 4

Ans : (c )

this is your answer.