Midterm 1 utc 4 132 thu sep 27 7 00pm 9 00pm
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

MIDTERM 1 UTC 4.132 Thu-Sep 27 , 7:00PM - 9:00PM PowerPoint PPT Presentation


  • 93 Views
  • Uploaded on
  • Presentation posted in: General

MIDTERM 1 UTC 4.132 Thu-Sep 27 , 7:00PM - 9:00PM. Bring pencils, calculators (memory cleared). Course Summary Unit 1 Provided. Question 1. Which one of these statements is true ? When near the center of the object, the electric field hardly changes with increasing distance from.

Download Presentation

MIDTERM 1 UTC 4.132 Thu-Sep 27 , 7:00PM - 9:00PM

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Midterm 1 utc 4 132 thu sep 27 7 00pm 9 00pm

MIDTERM 1 UTC 4.132 Thu-Sep 27, 7:00PM - 9:00PM

Bring pencils, calculators (memory cleared)

Course Summary Unit 1 Provided


Question 1

Question 1

Which one of these statements is true?

When near the center of the object, the electric field hardly changes with increasing distance from

a uniformly charged long rod.

a uniformly charged ring.

a uniformly charged disk.

a point charge.


Question

Question

-Q

+Q

metal

plastic

A solid metal ball carrying negative excess charge is placed near a uniformly charged plastic ball.

Which one of the following statements is true?

The electric field inside both balls is zero.

The electric field inside the metal ball is zero, but it is nonzero inside the plastic ball.

The electric fields inside both objects are nonzero and are pointing toward each other.

The electric field inside the plastic ball is zero, but it is nonzero inside the metal ball.


Review

Review

1) Vector Arithmetic

Find = <observation loc.> - <source loc.>

2) Electric Force and Field of a Charged Particle

-Q


Review1

Review

y

3) Dipoles

-Q

+Q

x

from – to +

Electric field of a dipole

Forces on a dipole

Electric field due to something else.

Calculate force on each Charge


Review2

Review

4) Induced Dipoles

Know and gives

– +

Example: Force between charge and induced dipole


Review3

Review

4) Polarization of Metals and Insulators

+

+

+

+

Metal

Metal

+

+

+

+

+

Insulator

+

Insulator

+

+

Neutral

Excess +

What is E inside metal in static equilibrium?


General procedure for calculating electric field of distributed charges

General Procedure for Calculating Electric Field of Distributed Charges

  • Cut the charge distribution into pieces for which the field is known

  • Write an expression for the electric field due to one piece

  • (i) Choose origin

  • (ii) Write an expression for DE and its components

  • Add up the contributions of all the pieces

  • (i) Try to integrate symbolically

  • (ii) If impossible – integrate numerically

  • Check the results:

  • (i) Direction

  • (ii) Units

  • (iii) Special cases


Review4

Review

6) Flux and Gauss’ Law

Examples: Spherical Shell, Long Rod, Large Sheet


Review5

Review

6) Gauss’s Law and Metals

Use E=0 inside metals

Examples: Neutral Metal Solid with Void; Charge in Void

7) Superposition

Example: Large Sheet and Infinite Rod

X

X

X


Room change for midterm 1 utc 4 132 thu sep 27 7 00pm 9 00pm

ROOM CHANGE FOR MIDTERM 1 UTC 4.132 Thu-Sep 27, 7:00PM - 9:00PM


  • Login