# Does electric field exist in vacuum?

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So Electric Fields are vectors (they have magnitude and direction) Electric Fields surround electric charges. Electric Fields exist in empty space (think of fields as a property of space!)

## Can electric field exist in a vacuum explain with the help of an example?

No, an electric charge cannot exist in a vacuum. Electric charge is associated with charged particles, and if they existed in some part of space it wouldn’t be a vacuum. … … If you have such a conductor in vacuum you have no problems.

## Is electric field zero in vacuum?

From Gauss’s law it is concluded that in vacuum, where no electric charges are present, divergence of electric field and closed surface integral of electric field are zero. …

## How electric field is created?

The electric force acts over the distance separating the two objects. … The space surrounding a charged object is affected by the presence of the charge; an electric field is established in that space. A charged object creates an electric field – an alteration of the space or field in the region that surrounds it.

## Can electric field exist without charge?

Yes. The an electric field can exist without a charge. BUT it cannot ORIGINATE without charge. EM waves comprise of electric and magnetic field in transit.

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## Is the vacuum empty?

According to present-day understanding of what is called the vacuum state or the quantum vacuum, it is “by no means a simple empty space”. According to quantum mechanics, the vacuum state is not truly empty but instead contains fleeting electromagnetic waves and particles that pop into and out of the quantum field.

## Why can’t electric field lines cross?

Electric field lines cannot cross. … This is because they are, by definition, a line of constant potential. The equipotential at a given point in space can only have a single value. If lines for two different values of the potential were to cross, then they would no longer represent equipotential lines.

## Is there matter in a vacuum?

Vacuum, space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there. It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal).

## What is electric field in vacuum?

Your field can then be described as E=Ez(x,y,z)ˆz. As an electrostatic field, this must satisfy Gauss’s law, which in vacuum reads ∇⋅E=∂Ez∂z=0, and means Ez cannot depend on the z coordinate. More intuitively, the electric field cannot change its magnitude along its direction in the absence of electric charge.

## Why can electric field lines pass through a vacuum?

Electricity is a flow of electrons. Electrons can flow across a vacuum. The problem with doing this over a long range is that you need a force to get the electrons to travel across the vacuum. In a CRT the cathode is heated, which gives the electrons the energy they need to escape the cathode.

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