Question

Three resistance are connected in parallel find their equivalent resistance ( resultant resistance)

Answer 1

Let denote the three resistance be R1,R2 and R3,

=>1/R eq. =1/R1+1/R2+1/R3

=>1/R eq. =(R2.R3+R1.R3+R1.R2)/R1.R2.R3

=>R1 eq=R1.R2.R3/(R1.R2+R2.R3+R3.R1)

[If all resistance are identical then

R1=R2=R3=r

=>R eq.= r^3/(3r^2)=r/3.]

Hope it helps

Answer 2

Answer:

Explanation:

Following is the formula used to calculate the equivalent resistance when three resistors are connected in parallel:

1Rp=1R1+1R2+1R3