Question

How can we find equivalent resistance ?

Answer 1

Parallel =1/r+1/2r......
Series. =R+2r+3r...

Tht 2r and 3r are actually different resistance

Answer 2

equivalent resistance connected in series... is given by the Formula of Rs=R1+R2+R3+R4

Equivalent resistance connected in parallel is given by the formula,
1/Rp = 1/R1 +1/R2+1/R3+1/R4