# What is the work done on the particle by the electric field?

## What is the work done on the particle by the electric field?

In other words, the work done on the particle by the force of the electric field when the particle goes from one point to another is just the negative of the change in the potential energy of the particle.

## What is the work done by the field on the charge?

The electric field is by definition the force per unit charge, so that multiplying the field times the plate separation gives the work per unit charge, which is by definition the change in voltage.

What is the work done by the electric field on the charge as it moves in the direction of the electric field?

If the positive charge moves in the direction of the field, the field does positive work on the charge. If the negative charge moves opposite the direction of the field, the field does positive work on the charge. If the negative charge moves in the direction of the field, the field does negative work on the charge.

### What is the expression for work done on a particle of charge q?

W = ∫Fext·dr= -q∫E·dr. The work done by the external force is equal to the change in the electrostatic potential energy of the particle in the external field. The change in the potential energy of a charge q when being moved from point A to point B, is the work done by an external force in moving the charge.

### Is work done by electric field negative?

Again, note that the work done by the electric field is positive, and the negative charge will lose electric potential energy and gain kinetic energy as it moves against the field. A negative charge, if free to move in an electric field, will move from a low potential point to a high potential point.

Is work done by field positive?

To find the sign of work done, check if the direction of the force and the displacement are the same or not. If they are in the same direction, work is positive, else it’s negative. When moved slowly, work done by an external force on a charge is always in the opposite direction of work done by the electric force.

## What is zero work done?

ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero. example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.

## Why work done is QV?

To get work done by a battery you need to know the total charge used (Q) used and the voltage (V), and plug it into W = QV to get work. Since we usually talk about amps/current when dealing with batteries not charge we have to convert current in to charge.

What is the work done by the electric field on particles?

This means that the work done by the force of the electric field on the charged particle as the particle moves form P 5 to P 3 is the negative of the magnitude of the force times the length of the path segment. Thus

### When is the work done on a particle the same?

Whenever the work done on a particle by a force acting on that particle, when that particle moves from point P1 to point P3, is the same no matter what path the particle takes on the way from P1 to P3, we can define a potential energy function for the force.

### What is the work done by the force on the charged particle?

The force has no component along the path so it does no work on the charged particle at all as the charged particle moves from point P 1 to point P 2. From P 2, the particle goes straight to P 3.

What happens when a particle is held still in an electric field?

If the charged particle is held still in the electric field by an external force, no work is done on the charged particle or on the field itself, because the charge does not change its electric potential energy or its position