lecture8

lecture8 - 1 Physics 2102 Gabriela Gonzlez You bring a...

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Physics 2102 Gabriela Gonzlez You bring a charge of -3C from infinity to a point P on the perpendicular bisector of a dipole as shown. Is the work that you do: a)Positive? b)Negative? c)Zero? a -Q +Q -3C P 2 What is the electric potential at the center of each circle? Potential is a SCALAR All charges are equidistant from each center, hence contribution from each charge has same magnitude: V +Q has positive contribution -Q has negative contribution A: -2V+3V = +V B: -5V+2V = -3V C: -2V+2V = 0 A C B -Q +Q Note that the electric field at the center is a vector, and is NOT zero for C! Divide the charge distribution into differential elements Write down an expression for potential from a typical element -- treat as point charge Integrate! Simple example: circular rod of radius R, total charge Q; find V at center. dq R 2 What is the electric potential at the center of each circle? Potential is a SCALAR All charges are equidistant from each center, hence contribution from each charge has same magnitude: V +Q has positive contribution -Q has negative contribution A: -2V+3V = +V B: -5V+2V = -3V C: -2V+2V = 0 A C B -Q +Q Note that the electric field at the center is a...
View Full Document

This note was uploaded on 05/20/2011 for the course PHYS 2102 taught by Professor Gimmnaco during the Fall '08 term at LSU.

Page1 / 8

lecture8 - 1 Physics 2102 Gabriela Gonzlez You bring a...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online