Question

A 9 ohm resistance is cut into 3 equal parts and connected in parallel . Find the equivalent resistance of the combination

Answer 1

Hey there! 

As 9 Ohm cut down in 3 equal parts.
It means Resistance of each wire = 3 Ohm

We know,

Parallel Equivalent Resistance  
1/r = 1/3 + 1/3 + 1/3
1/r = 3/3
1/r = 1 Ohm   ← (Ans)

Answer 2

9 ohm is cut into three equal parts

⇒R1 =  R2= R3 = 3 ohm.

Equivalent resistance =

1/r1 + 1/r2 + 1/r3

⇒1/3+1/3+1/3

⇒3/3

⇒1 ohm

∴ Equivalent resistance = 1 ohm