Question

Determine the permittivity (in Farads/meter) of quartz, water, and polyethylene.

Which of the above-mentioned materials is the best dielectric?

Answer 1

Relative permittivity can be shown as

?r = ?/?0 (1)

where

?r = relative permittivity - or dielectric steady

? = permittivity of substance (C2/(N m2))

?0 = permittivity of vacuum or free space (8.854187817 10-12 C2/(N m2))

Relative permittivity - ?r - and permittivity - ? - for a few substances. Note that permittivity may change with temperature for general materials.
Relative permittivity can be shown as
?r = ?/?0 (1)
where
?r = relative permittivity - or dielectric steady
? = permittivity of substance (C2/(N m2))
?0 = permittivity of vacuum or free space (8.854187817 10-12 C2/(N m2))
Relative permittivity - ?r - and permittivity - ? - for a few substances. Note that permittivity may change with temperature for general materials.
Water 4 - 88*106^-12
Quartz 4.5
Polyethylene, 2.2-2.4

Relative permittivity can be shown as
?r = ?/?0 (1)
where
?r = relative permittivity - or dielectric steady
? = permittivity of substance (C2/(N m2))
?0 = permittivity of vacuum or free space (8.854187817 10-12 C2/(N m2))
Relative permittivity - ?r - and permittivity - ? - for a few substances. Note that permittivity may change with temperature for general materials.
Water 4 - 88
Quartz 4.5
For quartz, the permittivity changes from 3.79 to 3.80N/m2
Polyethylene, 2.2-2.4
With this above information, we can conclude that water is the best dielectric.

Water 4 - 88

Quartz 4.5

For quartz, the permittivity changes from 3.79 to 3.80N/m2

Polyethylene, 2.2-2.4

With the above information, we can clearly find that water is the best dielectric among water, polyethylene, and quartz.

Water 4 - 88

Quartz 4.5
For quartz, the permittivity changes from 3.79 to 3.80N/m2

Polyethylene, 2.2-2.4

With the above information, we can clearly find that water is the best dielectric among water, polyethylene, and quartz.

Water 4 - 88

Quartz 4.5

For quartz, the permittivity changes from 3.79 to 3.80N/m2

Polyethylene, 2.2-2.4

With the above information, we can clearly find that water is the best dielectric among water, polyethylene, and quartz.