For a constant resistance, how is the voltage related to the current? voltage is inversely proportional to current, so when the voltage doubles, the current is cut in half. voltage is directly proportional to current, so when the voltage doubles, the current is cut in half. voltage is inversely proportional to current, so when the voltage doubles, the current doubles. voltage is directly proportional to current, so when the voltage doubles, the current doubles.

Voltage is directly proportional to current, so when the voltage doubles, the current doubles.
Explanation:
voltage, current and resistance can be related to each other using Ohm's law which can be stated as follows:
V = IR where:
V is teh voltage
I is teh current
R is the resistance

Now, assuming that the value of R is constant, we can note that as the current increases, the voltage increases by the same value of increase and vice-versa

This means that, at constant resistance, the voltage and current are directly proportional to each other.

Hope this helps :)