Lect08 - Physics 213 Sept 19 2006 Physics 213 Sept 19 2006...

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

View Full Document Right Arrow Icon
Physics II: Heat & Electromagnetism today Electric charge, conductors and insulators Induced charges Electric force Electric field Physics 213 Sept. 19, 2006 8.1 Conservation of electric charge— Electric charge is never created or destroyed, but only transferred. Matter: basic unit of charge = e Electron (e): q = -e Proton (p): q = +e Neutron (n): q = 0 Atoms (appear neutral): - electron charges “screen” proton charges Ions: - atoms with " 1 e’s missing (+ ion) or gained (- ion) Physics 213 Sept. 19, 2006 8.2 Electrical conductors : charge can move freely around. Examples: 1.metals 2.ionic liquids (both “+” and “-” charges) 3.plasmas semiconductors Electrical insulators : charges are stuck and can’t move around. Examples: molecular solids molecular liquids gases Physics 213 Sept. 19, 2006 8.3 Induced charge— Separation of “+” and “-” charges within object • conducting object: • insulating object: Physics 213 Sept. 19, 2006 8.4
Image of page 1

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

View Full Document Right Arrow Icon
A positively charged rod attracts an electrically neutral soda can.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern