5 electricPotential(1)

5 electricPotential(1) - Craig Ogilvie Craig Ogilvie 11...

Info iconThis preview shows pages 1–5. 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

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: Craig Ogilvie Craig Ogilvie 11 Review Lecture 4 § E-field is the vector sum of E-fields from all charges – Continuous charge distribution => integral § Fascinating when charges are mobile – Forces, due to E-field, move charges – Total E-field is now different, because charges have moved – Process continues till net force on charges are zero » Shapes, functions of molecules, proteins § For example, conductors in an E-field – Charges move to surface – E-field: sum of E-field from surface charges+external E-field – E=0 inside conductor Craig Ogilvie Goals § Electrical phenomena from an energy perspective – Electric potential energy – Electric potential Craig Ogilvie 22 Craig Ogilvie Question: Work 1st round Craig Ogilvie 33 When a positive charge is moved opposite to the direction of the electric field 1. the field does positive work on it and the potential energy increases. 2. the field does positive work on it and the potential energy decreases. 3. the field does negative work on it and the potential energy increases. 4. the field does negative work on it and the potential energy decreases. + q O bj1 0 O bj1 0 1 0 of 30 Craig Ogilvie Question: Work 2nd round Craig Ogilvie 44 1 2 3 4 0% 0% 0% 0% When a positive charge is moved opposite to the direction of the electric field 1. the field does positive work on it and the potential energy increases.and the potential energy increases....
View Full Document

This note was uploaded on 09/20/2011 for the course PHYS 222 taught by Professor Johnson during the Spring '07 term at Iowa State.

Page1 / 15

5 electricPotential(1) - Craig Ogilvie Craig Ogilvie 11...

This preview shows document pages 1 - 5. Sign up to view the full document.

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