||The ammeter reads 1 amp.
A 4-ohm resistor* is twice as resistant as a 2-ohm resistor,
so it is twice as hard for the current* to flow.
The resistor allows half of the 2 amp current to pass.
By Ohm's Law:
V = IR
Solving for I:
Now replacing the symbols with the values given:
1 = I
I = 1 amp