Question

What is the effect on an electric current when the voltage is increased? An increase in voltage causes the flow of electric current to

Answer 1

An increase in voltage causes the flow of electric current to also
increase, by the same factor that the voltage is increased.

The two quantities are directly proportional.

Answer 2

An increase in voltage causes the flow of electric current to increase.

Voltage and flow of electric current are directly related, so when the voltage increases, the flow of electric current increases, as well.
If the voltage were to decrease, the flow of electric current would decrease, too.