10.3 Electric Permittivity

• What is electric permittivity a measure of?

  Ability to transmit electric field
• Relative permittivity is also known as the dielectric constant.
• The value of absolute permittivity is 8.854 × 10⁻¹² F/m.


  True
• Relative permittivity is dimensionless.

  True
• How does electric permittivity influence Coulomb's Law?

  Affects electric force strength
• Match the parameter in Coulomb's Law with its definition:

  F ↔️ Electric force

  \epsilon ↔️ Electric permittivity

  r ↔️ Distance between charges

  q₁ and q₂ ↔️ Magnitudes of charges
• Match the type of permittivity with its definition and value:

  Permittivity of free space ↔️ Permittivity of a vacuum ||| 8.854 × 10⁻¹² F/m

  Relative permittivity ↔️ Ratio of material's permittivity to free space ||| Varies by material
• What does 'A' represent in the formula $\Phi =$$\epsilon A E$?


  Area
• Electric permittivity is represented by the Greek letter ε
• Match the type of electric permittivity with its definition:

  Absolute permittivity ↔️ Permittivity of free space

  Relative permittivity ↔️ Ratio to absolute permittivity
• When a dielectric material is present, the electric force is reduced compared to free space.
• What is the absolute permittivity of free space represented by?

  $\epsilon_{0}$
• The absolute permittivity of free space is valued at 8.854 × 10⁻¹² F/m.
• The permittivity of free space is denoted as \epsilon_{0}.
• What is the formula relating electric field, electric flux, and electric permittivity?

  $\Phi =$$\epsilon A E$
• What are the units of electric field (E)?

  V/m
• Electric permittivity is a measure of a material's ability to transmit an electric field.


  True
• How does electric permittivity influence the electric force in Coulomb's Law?

  Reduces force compared to free space
• What is absolute permittivity the permittivity of?

  Free space or a vacuum
• How does electric permittivity influence Coulomb's Law?

  Affects electric force strength
• What is the symbol for absolute permittivity?

  ε₀
• When a dielectric material is present, $\epsilon =$$\epsilon_{r} \epsilon_{0}$, which reduces the electric force
• Relative permittivity is also known as the dielectric constant.


  True
• Relative permittivity indicates how much better a material transmits an electric field compared to free space.


  True
• The electric flux $\Phi$ is measured in webers.
• To calculate the electric field, we use the formula $E =$$\frac{\Phi}{\epsilon A}$, where \epsilon</latex> represents permittivity.
• Match the type of electric permittivity with its definition:

  Absolute permittivity ↔️ Permittivity of free space

  Relative permittivity ↔️ Ratio of material's permittivity to free space
• A material with higher permittivity reduces the electric force compared to free space.
• How does a material with higher permittivity affect the electric force between charges?

  Reduces the electric force
• The absolute permittivity of free space has a value of 8.854 \times 10^{-12}</latex> F/m.
• The relative permittivity of a material is a dimensionless quantity.
• The formula for calculating the electric field is $E =$$\frac{\Phi}{\epsilon A}$, where $\epsilon$ is the material's permittivity.
• The strength of the electric field depends on the electric permittivity of the material.

  True
• Match the type of permittivity with its symbol:

  Absolute permittivity ↔️ $\epsilon_{0}$

  Relative permittivity ↔️ $\epsilon_{r}$
• Why is higher permittivity important in capacitors?

  Increases charge storage
• The relationship between electric field, electric flux, and electric permittivity is given by $\Phi =$$\epsilon A E$, where A is the area over which the electric field is measured.
• What is the formula for Coulomb's Law?

  $F =$$\frac{1}{4 \pi \epsilon} \frac{|q_{1} q_{2}|}{r^{2}}$
• Electric permittivity measures a material's ability to transmit electric fields.

  True
• A material with higher permittivity increases the electric force compared to free space.

  False
• The absolute permittivity of free space is constant, while the relative permittivity varies for different materials.


  True