Question

the equivalent resistance of three equal resistors when connected in the series is 9 oHM what will be the equivalent resistance if they are connected in parallel​

Answer 1

Answer:

here p1=p2=p3=n..........1st equation

and given Ps=p1+p2+p3=9 ohms(s-series)(given)

n+n+n=9(from 1st equation)

3n=9

n=3...............2nd equation

therefore Pp=1/p1+1/p2+1/p3=1/n+1/n+1/n=

3/n=3/3=1(from 2nd equation)