Podcast
Questions and Answers
What is the purpose of dividing a general surface into small elements of area ΔA?
What is the purpose of dividing a general surface into small elements of area ΔA?
- To calculate the electric field at each element
- To neglect the variation in the electric field over one element (correct)
- To define the direction of the vector ΔAi
- To find the net electric flux through the surface
What is the direction of the vector ΔAi with respect to the surface element?
What is the direction of the vector ΔAi with respect to the surface element?
- Parallel to the surface element
- Tangent to the surface element
- At an angle θi to the surface element
- Perpendicular to the surface element (correct)
What is the flux through the element ΔAi in terms of the electric field Ei and the angle θi?
What is the flux through the element ΔAi in terms of the electric field Ei and the angle θi?
- EiΔAi / cosθi
- EiΔAi sinθi
- EiΔAi / sinθi
- EiΔAi cosθi (correct)
What is the net flux through a closed surface surrounding a point charge q?
What is the net flux through a closed surface surrounding a point charge q?
Why does the charge q4 not contribute to the flux through any surface in Figure 5?
Why does the charge q4 not contribute to the flux through any surface in Figure 5?
What is the direction of the electric field E at every point on the spherical gaussian surface in Figure 6?
What is the direction of the electric field E at every point on the spherical gaussian surface in Figure 6?
What is the electric flux ∅𝐸 through a rectangular surface of area A, when the surface is perpendicular to the electric field?
What is the electric flux ∅𝐸 through a rectangular surface of area A, when the surface is perpendicular to the electric field?
What is the unit of electric flux?
What is the unit of electric flux?
What happens to the electric flux when the surface under consideration is not perpendicular to the electric field?
What happens to the electric flux when the surface under consideration is not perpendicular to the electric field?
What is the relationship between the number of electric field lines and the magnitude of the electric field?
What is the relationship between the number of electric field lines and the magnitude of the electric field?
Why is the flux through A’ equal to the flux through A in Figure 2?
Why is the flux through A’ equal to the flux through A in Figure 2?
What is the generalized formula for electric flux when the surface is at an angle θ to the electric field?
What is the generalized formula for electric flux when the surface is at an angle θ to the electric field?
Flashcards are hidden until you start studying
