What influences the amount of voltage used by each load?

The amount of voltage used by each load is significantly influenced by resistance, which is determined by Ohm's Law (V = IR), where V represents voltage, I is current, and R is resistance. When a load in a circuit has a certain resistance, the amount of voltage required to push the current through that load will depend directly on the resistance value.

If the resistance of the load increases, a higher voltage is necessary to maintain the same current. Conversely, if the resistance decreases, the required voltage for the same current will also decrease. This relationship illustrates how resistance dictates the voltage needed to achieve the desired flow of current in a circuit, making it a key factor in understanding electrical loads.

While current, the power source, and frequency can affect various aspects of a circuit's functionality, it is the resistance that ultimately influences the voltage across each load according to Ohm’s law.