8.5 Electric Flux

• What does the symbol $\vec{E}$ represent in the electric flux formula?


  Electric field vector
• What is the electric flux when the surface is parallel to the electric field?

  Zero flux
• Where do electric field lines originate?

  Positive charges
• What do electric field lines represent in contrast to electric flux?

  Field direction
• Electric field lines are always perpendicular to equipotential surfaces.
• Electric field lines start at positive charges and end at negative charges.
• Arrange the properties of electric field lines and electric flux based on their relevance to the field or surface:

  1️⃣ Represent field direction (Electric Field Lines)

  2️⃣ Measure field passing through a surface (Electric Flux)

  3️⃣ Start/end at charges (Electric Field Lines)

  4️⃣ Depends on surface orientation (Electric Flux)

  5️⃣ Perpendicular to equipotentials (Electric Field Lines)

  6️⃣ Maximized when surface is perpendicular (Electric Flux)
• The density of electric field lines reflects the field's strength.
• The density of electric field lines indicates the strength of the electric field.
• Electric flux is a measure of the electric field passing through a given surface.
• The electric flux depends on the orientation of the surface relative to the electric field.


  True
• Electric field lines are perpendicular to equipotential surfaces.


  True
• The formula for electric flux is \Phi_{E}
• What is the electric flux when the surface is perpendicular to the electric field?

  Maximum flux
• Which surface orientation results in maximum electric flux?

  Perpendicular to field
• The density of electric field lines indicates the strength of the electric field.


  True
• Match the concept with its description:

  Electric flux ↔️ Field passing through a surface

  Electric field lines ↔️ Represent field direction

  Maximum flux ↔️ Surface perpendicular to field

  Zero flux ↔️ Surface parallel to field
• The density of electric field lines indicates the strength of the electric field.


  True
• The strength of the electric field is indicated by the density of the field lines.
• Electric field lines are parallel to equipotential surfaces.

  False
• Electric field lines are always perpendicular to equipotential surfaces.


  True
• $\vec{E}$ represents the electric field vector.


  True
• The formula for electric flux is $\Phi_{E} =$$\int \vec{E} \cdot d\vec{A}$, where $\vec{E}$ is the electric field vector.
• Electric field lines start at positive charges and end at negative charges.
• What does electric flux measure?

  Field passing through a surface
• The formula for electric flux is \Phi_{E}
• If the electric field vector and area vector are parallel, the electric flux is maximized.


  True
• What method is used to calculate electric flux in a non-uniform electric field?

  Integration
• What is the electric flux when the surface is perpendicular to the electric field?

  Maximum flux
• What is the formula for calculating electric flux through a non-uniform electric field?

  $\Phi_{E} =$$\int \vec{E} \cdot d\vec{A}$
• The electric flux depends on the orientation of the surface relative to the electric field.


  True
• Electric flux starts and ends at charges.


  True
• What does $\Phi_{E}$ represent in the electric flux formula?


  Electric flux
• What is the formula for electric flux in a uniform electric field?

  $\Phi_{E} =$$\vec{E} \cdot \vec{A}$
• Match the field type with its formula for calculating electric flux:

  Uniform field ↔️ $\Phi_{E} =$$\vec{E} \cdot \vec{A}$

  Non-uniform field ↔️ $\Phi_{E} =$$\int \vec{E} \cdot d\vec{A}$
• What is the electric flux when the surface is parallel to the electric field?

  Zero flux
• Electric flux is a measure of the electric field passing through a given surface<surface>
• Match the surface orientation with the corresponding electric flux:

  Perpendicular to field ↔️ Maximum flux

  Parallel to field ↔️ Zero flux

  Angled to field ↔️ Intermediate flux
• Electric field lines start at positive charges and end at negative charges.


  True
• Compare electric field lines and electric flux based on their properties:

  1️⃣ Electric field lines represent field direction

  2️⃣ Electric flux measures field passing through a surface

  3️⃣ Field lines start/end at charges

  4️⃣ Flux depends on surface orientation