Hi all
Today's physics lab was using the Pasco field mapper kits to map the Electric field and lines of equipotential.
Okay so my students were given a point charge with a guard ring around it. It just wouldn't seem to work.
One problem was that the potential difference on the guard ring wasn't constant. The farther you got from the point where the electrode was connected, the lower the potential difference got. Shouldn't it be the same?
What's going on?
Tina (user error...lots of it)
Tina Fanetti
Physics Instructor
Western Iowa Technical Community College
4647 Stone Ave
Sioux City IA 51102
712-274-8733 ext 1429