Question

4 resistors each of resistance 2 ohm are connected in parallel.What is the effective resistance?

Answer 1

1/R = 1/R¹ + 1/R² + 1/R³ + 1/R4
1/R = 1/2 +1/2+ 1/2 + 1/2
1/R = 1+1+1+1/2
1/R = 4/2
1/R = 2
R =1/2 OHM

Answer 2

1/Rp = 1/2 + 1/2 + 1/2 + 1/2
1/Rp = 1 + 1 = 2
Rp = 1/2
ans:- 1/2