Question

How does changing the voltage in a circuit affect the current in the circuit

Answer 1

The formula for the voltage is shown below:
Voltage = Current x Resistance
V=I x R

When we change voltage:
I =V/R or R=V/I
Increasing the voltage in an electrical circuit will also increase the current value, as well as the resistance of the load,
 

Answer 2

If you increase the voltage in a circuit it will increase the resistance and the amount of energy.