The resistors are connected both in parallel and series. To calculate the total resistance, we have:
For the parallel connection: 1R=11+11
1R=2impliesR=0.5Ω
For the series connection: Rtotal=(1+0.5)Ω=1.5Ω
Recall, V=IR
3=1.5IimpliesI=31.5=2A
