chp33EfieldsPotentials

# chp33EfieldsPotentials - The Electric Field Coulombs Law...

This preview shows pages 1–4. Sign up to view the full content.

The Electric Field Coulomb’s Law describes a force between two charged objects. There’s another way to view the situation: 1. A charge (call it the ” source charge ”) in space creates a force field called the Elec- tric Field . 2. A second charge (call it the ” test charge ”) will feel a force due to this field . Is this field real? Did the source charge change something about the space around it ? What is the test charge seeing? The source charge or the field? 1

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

View Full Document
The Electric Field (continued) The source charge ( q s ) causes an Electric Field. The test charge ( q t ) feels the electric force ( F el ) due to this Electric Field: F el = k q s q t r 2 The strength of the Electric field is defined as: the Force felt by the test charge divided by the test charge: E = F el q t = k q s r 2 1. How does the strength of the Electric field depend on the source charge? 2. How does the strength of the Electric field depend on the test charge? 3. How does the strength of the Electric field depend on distance from the source charge? 4. Is the Electric Field a vector? 2
Electric Field Lines The Electric Field is a vector: 1. Its direction at a point is the same as that of the electric force felt by a positive test charge at that point. 2. Its magnitude or strength varies directly with the source charge and inversely with the square of the distance from the source charge.

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

View Full Document
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