# What is the difference between electric potential energy and electric potential difference?

**Electric potential energy**is the

**potential energy**stored when charges are out of equilibrium (like gravitational

**potential energy**).

**Electric potential**is the same, but per charge, U e q . An

**electric potential difference between**two points is called voltage, V = U e 2 q − U e 1 q .

A.

### What is meant by electrical potential difference?

By

**definition**, the**electric potential difference**is the**difference**in**electric potential**(V) between the final and the initial location when work is done upon a charge to change its**potential**energy.#### What is the difference between potential and potential difference?

**Potential Difference**.**Potential difference**, or voltage, is the**difference**in**electric potential**energy**between**two points. It is denoted by ∆V and has units of volts, or joules per Coulomb.**Potential**is the specific**potential**energy.#### What is the potential difference for kids?

Measuring Resistance. The symbol "V" is used to represent something called the**potential difference**.**Potential difference**is the amount of work done in moving a charge between two points, divided by the size of the charge. That's kind of complicated, though. You can think of**potential**as electrical height.#### What is the SI unit of potential difference?

The standard metric unit on electric potential difference is the volt, abbreviated V and named in honor of Alessandro**Volta**. One Volt is equivalent to one**Joule**per**Coulomb**.

B.

### What is the definition of electric potential?

An

**electric potential**(also called the**electric**field**potential**,**potential**drop or the electrostatic**potential**) is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration.#### Can there be a negative potential energy?

It is also important to note that**potential energy can**be positive, zero or**negative**. For example, if the datum is defined as the top of a table, and the object is on the floor, that object has a**negative potential energy**since the height below the top of the table.#### Can you have a negative electric potential energy?

Note that if q is**negative**, its sigh should be used in the equation! Therefore, a system consisting of a**negative**and a positive point-like charge has a**negative potential**energy. A**negative potential**energy means that work must be done against the**electric**field in moving the charges apart!#### What is an equipotential line?

In this case the "altitude" is electric potential or voltage.**Equipotential lines**are always perpendicular to the electric field. In three dimensions, the**lines**form**equipotential**surfaces. Movement along an**equipotential**surface requires no work because such movement is always perpendicular to the electric field.

C.

### What is the difference between voltage and potential?

If the

**electric potential difference between**two locations is 3 volts, then one coulomb of charge will gain 3 joules of**potential**energy when moved**between**those two locations. Because**electric potential difference**is expressed in units of volts, it is sometimes referred to as the**voltage**.#### What is the unit used to measure potential difference?

Potential difference (V) – is measured in volts (V). Potential difference is the work done per unit charge. A potential difference of 1 V means that 1**joule**of work is done per**coulomb**of charge.#### What is the Ohm's law?

The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R.**Ohm's Law**is given by: V = I R where V is the potential difference between two points which include a resistance R.#### What is the potential difference between two points?

**One Volt**is equivalent to one Joule per Coulomb. If the electric potential difference between two locations is**1 volt**, then one Coulomb of charge will gain 1 joule of potential energy when moved between those two locations.

Updated: 17th October 2019