Question

If 3 resistances of 3 ohm each are connected in parallel, what will be their total resistance?

Answer 1

Inference from the question,

There resistances of 3Ω are connected in parallel

i.e, R1=R2=R3=3Ω

When resistors are connected in parallels their equivalent resistance is found by the expression,

1/Rp =1/R1 + 1/R2 + 1/R3

→1/Rp = 1/3 + 1/3 + 1/3

→1/Rp=3/3

→Rp= 1Ω

The equivalent resistance is 1Ω