Question

If the resistances 1Ω, 2Ω, 3Ω, 4Ω are parallel, then the equivalent resistance is?

(a) 0.46Ω

(b) 0.48Ω

(c) 0.5Ω

(d) 0.52Ω

Answer 1

The correct choice is (b) 0.48Ω

For explanation: The equivalent resistance 1/Rt = (1/R1)+(1/R2)+(1/R3)+(1/R4). And R1, R2, R3, R4 are   1Ω, 2Ω, 3Ω, 4Ω  respectively. => Rt = 0.48Ω.