Final answer:
Electric potential energy is measured in Joules, electric potential in Volts, electron volt is a unit of energy, and potential difference is measured using a voltmeter. Electric potential energy depends on charge and voltage is defined as the energy per unit charge.
Step-by-step explanation:
1. The units of electric potential energy are Joules (J), which is the standard unit of energy.
2. The units of electric potential are Volts (V) which is electric potential energy per unit charge.
3. The electron volt is a unit of Energy. Specifically, one electron volt is defined as the energy one electron acquires when it moves through an electric potential difference of one volt.
4. Measuring potential difference between two points is done using a Voltmeter.
5. The electric potential energy of a particle does depend on its charge because potential energy is a product of the charge and the electric potential.
The relationship between voltage and energy, or more precisely between potential difference and electric potential energy, is that voltage is the energy per unit charge at some point in space. Measurements of voltage are always between two points because it represents the potential difference, or the work needed to move a charge from one point to another in an electric field.