2Ω
8? +? 40? //? 10? =? 8? +? 8? =? 16? Ω
The current shunt of parallel circuit is inversely proportional to the resistance;
I 1? =? 3? *? 2? /? 18? =? 1/3? A
You''? =? -? I 1? *? 8? =? -? 8/3? A