24. Electric Force & Field; Gauss' Law
Electric Flux
24. Electric Force & Field; Gauss' Law
Electric Flux
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- Multiple Choice
The electric flux through each surface of a cube is given below. Which surfaces of the cube does the electric field run parallel to?
Φ1 = 100 Nm2 /C Φ4 = 0 Nm2 /C
Φ2 = 20 Nm2 /C Φ5 = −40 Nm2 /C
Φ3 = 0 Nm2 /C Φ6 = −80 Nm2 /C
- Multiple Choice
Where does the normal vector point for a spherical shell?
- Multiple Choice
What is the total flux through the two surfaces depicted in the following figure? Note that surface 1 has an area of 50 cm2 and surface 2 has an area of 100 cm2 , and E = 500 N/C.
- Multiple ChoiceA uniform electric field points in the positive x direction and has a magnitude of . What is the total flux through a rectangle with height and width ? The rectangle lies in the y-z plane.
- Open QuestionA hemispherical surface with radius r in a region of uniform electric field E→ has its axis aligned parallel to the direction of the field. Calculate the flux through the surface.
- Open QuestionA flat sheet of paper of area 0.250 m2 is oriented so that the normal to the sheet is at an angle of 60° to a uniform electric field of magnitude 14 N/C. (c) For what angle φ between the normal to the sheet and the electric field is the magnitude of the flux through the sheet (i) largest and (ii) smallest? Explain your answers.
- Open QuestionA flat sheet of paper of area 0.250 m2 is oriented so that the normal to the sheet is at an angle of 60° to a uniform electric field of magnitude 14 N/C. (a) Find the magnitude of the electric flux through the sheet. (b) Does the answer to part (a) depend on the shape of the sheet? Why or why not?
- Open QuestionA 2.0 cm×3.0 cm rectangle lies in the 𝓍𝒵-plane with unit vector nˆ pointing in the +y-direction. What is the electric flux through the rectangle if the electric field is(b) E (→ above E) = (4000 î−2000 kˆ) N/C?