Final answer:
Voltage is the basic element of electricity described as 'electrical pressure' and it is responsible for creating an electrical field that drives current through a conductor. Resistance is the property that opposes the flow of this electric current. Ohm's law relates voltage, current, and resistance in a conductor.
Step-by-step explanation:
The basic element of electricity that is also described as "electrical pressure" is voltage. Voltage, often represented by the letter V, is the potential difference that originates from voltage sources like batteries and generators. This potential difference is necessary to create an electrical field which causes current to flow through conductors. The amount of current is influenced by the voltage as well as the resistance of the material. Resistance, on the other hand, is the property of materials to resist the passage of electric current. Ohm's law states that voltage across a resistor is equal to the current flowing through the resistor times its resistance.