What are equipotential lines?

posted Dec 17, 2017, 10:15 AM by Barbara Fortunato   [ updated Dec 23, 2017, 12:48 PM ]
2: T 12/19 lab, 4: W 12/20 lab

Daily Quiz:  Finding potential with path integral

Today, we'll learn how to draw equipotential lines with a lab.  Then, we'll do 2005E1 and make sure that you understand the relationship between equipotential lines and electric field lines 

With any time remaining, we'll continue working on the problems from the last post in preparation for your quiz next class.
    Required:   1979E12000E21994E11993E11989E11980E2

Homework QUIZ on all of Electrostatics on Friday, December 22nd.  If you already know you will not be in school that day, make sure you make up the quiz before break; send me an email as to when you will make it up.  If you miss the quiz on Friday, then you will have to make up the quiz during our first class period in January.   If you can calculate V by integrating E, can't you find E by taking the derivative of V?  Kind of, but the problem is that E is a vector, so how do we get a vector from a scalar?  First, for a conceptual explanation, check out the video below.  Then, read section 23-7 on page 602-603 in your textbook, and work through example 23-11.  It's a cool different way of finding the electric field.  In a lot of ways it's easier than the electric field integral, since you don't have to ever deal with component geometry.  Check it out! 

Electric field as a gradient of potential