Answer:
The current halves
Explanation:
The relationship between voltage, current and resistance in a circuit is given by Ohm's law:
[tex]V=RI[/tex]
where
V is the voltage
R is the resistance
I is the current
We can rewrite the formula as
[tex]I=\frac{V}{R}[/tex]
we see that I is directly proportional to V and inversely proportional to R. In this problem, V is held constant while R is doubled:
[tex]R'=2R[/tex]
so, the new current in the circuit will be
[tex]I'=\frac{V}{R'}=\frac{V}{2R}=\frac{1}{2}I[/tex]
So, the current halves.
