# Lecture03bd - Physics 102 Lecture 3 Electric Potential...

This preview shows pages 1–8. Sign up to view the full content.

Physics 102: Lecture 3, Slide 1 Physics 102: Lecture 3 Electric Potential Energy & Electric Potential

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

View Full Document
Physics 102: Lecture 3, Slide 2 Overview for Today’s Lecture – Uniform fields – Point charges • Electric Potential (like height) – Uniform fields – Point charges
Physics 102: Lecture 3, Slide 3 Work • Brick raised y i y f • Charge moved x i x f • F E = qE (left) • W E = –qEd • W you = qEd W = F d cos( q ) Gravity Electric F G =mg y i y f h • F G = mg (down) • W G = –mgh • W you = mgh - F x f x i E d W=0 W=0

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

View Full Document
Physics 102: Lecture 3, Slide 4 A B C Uniform E In what direction does the force on a negative charge at point A point? 1) left 2) right 3) up CheckPoint 1.1 64% 35% 1% F Electric field points in the direction a POSITIVE charge would feel force.
Physics 102: Lecture 3, Slide 5 A B C Uniform E When a negative charge is moved from A to C the ELECTRIC force does 1) positive work. 2) zero work. 3) negative work. 18% 76% 6% - F “I would say zero because the path is perpendicular to the field” motion CheckPoint 1.2

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

View Full Document
Physics 102: Lecture 3, Slide 6 A B C Uniform E When a negative charge is moved from A to B the ELECTRIC force does 1) positive work. 2) zero work. 3) negative work. 49% 8% 43% CheckPoint 1.3 - F motion because the direction of the displacement is 180 degrees from direction of the force ΔU E = - W E field = +W You Electric force did negative work You did positive work Electric potential energy increased (Checkpoint 1.5)
Physics 102: Lecture 3, Slide 7 A B C

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 23

Lecture03bd - Physics 102 Lecture 3 Electric Potential...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online