In the first circuit you build, how does changing the voltage in a circuit affect the current in the circuit?

As the current across a load increases, the voltage increases and as the current decreases, the voltage decreases.

Explanation:

The relationship that exists between the voltage and the current of the circuit I build can be analysed using the ohm's law which states that "the current passing through metallic conductor at constant temperature is directly proportional to the potential difference across its ends. This is expressed as shown:

V = IR where:

V is the potential difference

I is the current

R is the resistance/load

The relationship shows that an increase/decrease in the value of current a cross a load will lead to increase/decrease in the potential difference (voltage) across such load.