How does changing the battery's VOLTAGE affect the current?

The higher the voltage the slower the flow of current?
The higher the voltage the greater the flow of current?
There is no change

The higher the voltage, the greater the flow of current. This is because voltage and current are directly proportional according to Ohm's Law (V = IR), where V is voltage, I is current, and R is resistance. Increasing the voltage will result in an increase in the current flowing through the circuit.