You asked: Can you have an electric field in an insulator?

When the electric field applied across an insulating substance exceeds in any location the threshold breakdown field for that substance, the insulator suddenly becomes a conductor, causing a large increase in current, an electric arc through the substance.

What happens if you place an insulator in an electric field?

When an insulator, also called the dielectric, is placed in an electric field, it gets polarised. The polarised dielectric reduces the effective electric field.

Is electric field in insulator zero?

The direction of electric field is the same in the direction of electric force. … At the center of a charged spherical conductor, mutual cancellation of forces occurs, resulting in zero net force at the center. So the electric field is zero.

Why is the electric field inside an insulator not zero?

This is attributed to the fact that the electrons are loosely bound to the nuclei and they are free to rearrange themselves until the net field becomes zero. But in an insulator the electrons are tightly bound to the nuclei. So they can resist movement even at more intense fields. So net field is not zero.

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What happens when a charged insulator touches an insulator?

Metals “eat” charge and don’t discharge as much, insulators “hold” them until they have a chance to discharge. When a charged object touches an insulator there is usually no charge being transferred unless the field strength is so high that you get corona discharge.

Can an insulator charge a conductor?

As for C, both insulators and conductors can be charged. As for D, this has nothing to do with the conductive properties of materials. As for E, neutrons are located in the nucleus and are “out of the way” of mobile electrons.

Can electric field lines pass through a vacuum?

1) YES, electric fields exist and can extend/propagate through a vacuum.

Is there an electric field inside a conductor?

The electric field is zero inside a conductor. Just outside a conductor, the electric field lines are perpendicular to its surface, ending or beginning on charges on the surface. Any excess charge resides entirely on the surface or surfaces of a conductor.

Do insulators have charge?

An insulator holds charge within its atomic structure. Objects with like charges repel each other, while those with unlike charges attract each other.

Can electric field inside a conductor be non zero?

Can the electric field inside a conductor be non zero? The answer is NO. Electric field inside a conductor is always zero. Reason: The electricity conducting free electrons are only present on the external surface of the conductor.

Can conductors become polarized?

The conductor has become polarized : positive charge on one side, negative charge on the other. … If we bring a negative charge towards the conductor instead, the conductor polarizes in the opposite direction, but the same result occurs: the nearby positive charges drag the conductor towards the negative charge.

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Can the electric field be negative?

An electric field can never be negative. An electric field is a force experienced by the charge divided by the magnitude of the charge. … So even if the charge is negative in nature, its magnitude will also be positive and therefore, an electric field can never be negative.

What is insulating sphere?

Question: An insulating sphere of radius carries a total charge. which is uniformly distributed over the volume of the sphere. Use Gauss’ law to find the electric field distribution both inside and outside the sphere.

What is uniform electric field?

A uniform electric field is a field in which the value of the field strength remains the same at all points. In a uniform electric field, as the field strength does not change and the field lines tend to be parallel and equidistant to each other. … The electric field will be uniform at the centre of the plates.