Correct option is D
The correct answer is (d) 3.
Solution-
- The equivalent resistance of three resistors of 9 ohms each connected in parallel is less than the smallest resistor.
- The expression for the equivalent resistance of three resistors connected in parallel is- 1/Rp = 1/R1 + 1/R2 + 1/R3 =1/9+1/9+1/9= 1/3
Rp= 3 ohms