PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
Three resistors, each of 6Ω, are connected in parallel with an unknown resistor Rx. The equivalent resistance of the entire parallel network is required to be 1.2Ω. What should be the value of Rx?
(a) 1.29Ω
(b) 2Ω
(c) 3Ω
(d) 1.50Ω