Question

calculate the effective resistances in parallel circuit

Answer 1

1/R= 1/R1+1/R2
So R = R1*R2 / R1+R2

Answer 2

the resistance in parallel circuit is given by the formula -

let C1 , C2 ,.....Cn be the resistors connected in parallel,

then,

1/Cp = 1  / C1 + 1 / C2 + ....... 1 / Cn


         hope this helps u...