0
A dielectric field is a region around a charged object or between two oppositely charged objects where the electric field affects the alignment of electric dipoles within a dielectric material. Dielectrics are non-conducting materials that can store and transmit electric energy. The presence of the dielectric field can alter the overall electric field distribution in the space.
What else can I help you with?
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
The net electric field inside a dielectric decreases due to polarization. The external electric field polarizes the dielectric and an electric field is produced due to this polarization. This internal electric field will be opposite to the external electric field and therefore the net electric field inside the dielectric will be less.
What is the effect of a dielectric material on the electric field of a capacitor?
A dielectric material placed between the plates of a capacitor reduces the electric field strength within the capacitor, increasing its capacitance. This is because the dielectric material polarizes in response to the electric field, creating an opposing electric field that weakens the overall field between the plates.
What is the effect on the electrostatic force in the presence of dielectric?
The presence of a dielectric material between two charged objects reduces the electrostatic force between them. This is because the dielectric material polarizes in response to the external electric field, creating an opposing electric field that weakens the net field between the objects. This effectively reduces the electrostatic force, making it weaker than if the dielectric material was not present.
What is the dielectric breakdown field in air?
The dielectric breakdown field in air is typically around 3 kV/mm to 6 kV/mm. This is the minimum electric field that can cause air to become conductive and allow current to flow through it.
When a medium behave like dielectric?
When a medium behaves like a dielectric, it means that it can become polarized in the presence of an electric field. This polarization results in the medium experiencing forces and interactions with the electric field, affecting the overall behavior of the system. Dielectric materials are characterized by their ability to store electrical energy in the form of electric field-induced polarization.
What will happen to the electric field when a dielectric is placed?
The electric field is weakened when a dielectric is inserted.
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
The net electric field inside a dielectric decreases due to polarization. The external electric field polarizes the dielectric and an electric field is produced due to this polarization. This internal electric field will be opposite to the external electric field and therefore the net electric field inside the dielectric will be less.
What is the Electric field inside a Dielectric?
E = Eo/k k is dielectric constant
What is the definition of the term dielectric?
'Dielectric' is often used in a general sense to refer to a material (such as ceramic, mica, plastic or paper) which is a poor conductor of electricity. This term is used in the classical description of a capacitor -- two electric conductors separated by a dielectric. By applying electric charge to one conductor an electric field is created. The dielectric allows the electric field to pass through it and affect the other conductors; however the dielectric prevents electrons from flowing between the conductors, so the electric field remains (and the charge remains stored on the conductor). [Side note for beginners: An electric field creates a force (measured in Volts) upon an electron or charged particle which tends to make it move. The conductor allows electrons to move easily within it. The dielectric resists the movement of electrons in it.] More generally, we speak of a 'Dielectric Field' as a mathematic description of how electric charge influences the properties of the space around it. The Dielectric field interacts with space and with any material in the space to create an 'Electric Field'. In simple terms, the electric field at any point is the product of the dielectric field at that point and the 'Dielectric Constant' of the material at that point. In more general terms, the 'electric field vector' at a point is the tensor product of the 'dielectric field vector' and the 'dielectric tensor' of the material at that point. The dielectric field is not a measurable entity, but rather a mathematical tool that allows us accurately to model the electric field, which is measurable. The article on Dielectrics at http://en.wikipedia.org/wiki/Dielectric provides more description, especially on the dielectric field model.
What is the effect of a dielectric material on the electric field of a capacitor?
A dielectric material placed between the plates of a capacitor reduces the electric field strength within the capacitor, increasing its capacitance. This is because the dielectric material polarizes in response to the electric field, creating an opposing electric field that weakens the overall field between the plates.
What is dielectric stress?
The dielectric stress is the stress placed upon a material when a voltage is placed across it.
What is the effect on the electrostatic force in the presence of dielectric?
The presence of a dielectric material between two charged objects reduces the electrostatic force between them. This is because the dielectric material polarizes in response to the external electric field, creating an opposing electric field that weakens the net field between the objects. This effectively reduces the electrostatic force, making it weaker than if the dielectric material was not present.
What is dielectric constant in chemical terms?
The dielectric constant is a measure of a material's ability to store electrical energy in an electric field. In chemical terms, it reflects the ability of a substance to polarize in response to an applied electric field, affecting the material's ability to conduct electricity. Materials with higher dielectric constants are better insulators.
Where is the knowledge of dielectric strength helpful?
One field in which this is helpful is in the manufacture of insulating materials. Dielectric strength determines the strongest electric field an insulator can withstand before it fails. For example, if the insulation around a wire melts or breaks, the insulator's dielectric strength is compromised.
What is the dielectric breakdown field in air?
The dielectric breakdown field in air is typically around 3 kV/mm to 6 kV/mm. This is the minimum electric field that can cause air to become conductive and allow current to flow through it.
When a medium behave like dielectric?
When a medium behaves like a dielectric, it means that it can become polarized in the presence of an electric field. This polarization results in the medium experiencing forces and interactions with the electric field, affecting the overall behavior of the system. Dielectric materials are characterized by their ability to store electrical energy in the form of electric field-induced polarization.
What are Isotropic and Homogeneous Dielectric?
It is the same everywhere and in all directions.
