{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# act02ans - PHYS-1200 PHYSICS II Class 2 Activity Flux and...

This preview shows pages 1–3. Sign up to view the full content.

PHYS-1200 PHYSICS II SPRING 2005 Class 2 Activity: Flux and Gauss' Law ANSWERS 1. Area Vectors On the figure, draw an area vector A for the flat side facing you of the object shown below. On the figure, draw two different area vectors A d on the curved side of the object. A d A d A 2. Flux through an open surface . An open surface is a 2-dimentional area that does not enclose any volume, like the area enclosed by a ring. As shown in the figure, a ring has an area vector defined in the direction shown. There is a light source on the right and the ring casts a shadow on a wall on the left. What are the angles between the area vector and the direction of the light when there is maximum light coming through the ring? θ = zero and 180 __º How about when there is no light coming through? θ = ___ 90 or 270 ____º Electric flux, Φ E , is proportional to the number of electric field lines passing through a surface. For an open surface, like a sheet of paper or the area enclosed by a ring or a 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
doorway, the flux through that surface is positive for a field line that has a component parallel to the area vector of that surface. Using the ring and light idea, think about the light passing through the ring in terms of FLUX as a function of the angle θ . Deduce the value of the angle θ at each of the three points indicated on the graph. Point
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern