April 7 AP Physics. AP Practice Exam April 28 ACT day 1 pm Not optional.

Slides:

Advertisements

Similar presentations

Electric forces and electric fields

Advertisements

April 7 AP Physics. AP Practice Exam April 28 ACT day 1 pm Not optional.

March 13 AP Physics. In: An object of charge +q feels an electric force F E when placed at a particular location in an electric field, E. Therefore, if.

AP Physics March 5.

Chapter 20 Reading Quiz Dr. Harold Williams.

Electric Energy and Circuits. Electrostatic Equilibrium No net motion of charge is occurring within a conductor Meets the following conditions ▫Electric.

Electric Potential Electric forces are conservative. Work done by an electric force is W=-q o Ed  U=-W.

4.1 Exam Date – Wed 2/9 Topics Covered Listed on Class Website Sample Exam from a few years back is also on the web. Today Start Unit 5: Electric Potential.

THE ELECTRIC FIELD Chapter Field Force Electric force, just like gravitational force is a field force. A field force is capable of acting through.

Chapter 21 Electric Field 1. Chapter 21.1 The Electric Field Define an electric field Solve problems relating to charge, electric fields, and forces.

1 Capacitance and Dielectrics Chapter 27 Physics chapter 27.

Lecture 6 Capacitance and Capacitors Electrostatic Potential Energy Prof. Viviana Vladutescu.

Hw: All Chapter 5 problems and exercises. Test 1 results Average 75 Median 78 >90>80>70>60>50

A Charged, Thin Sheet of Insulating Material

Real Insulators (Dielectrics)

Topic 9.3 Electric Field, Potential, and Energy

Hw: All Chapter 5 problems and exercises. Outline Applications of Gauss’s Law - The single Fixed Charge -Field of a sphere of charge -Field of a spherical.

Capacitance and Dielectrics

Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Electric potential energy Electric potential Conservation of energy Chapter.

5) Coulomb’s Law a)form. b) Units Two possibilities: - define k and derive q (esu) - define q and derive k (SI) √ “Define” coulomb (C) as the quantity.

2. 2s /eo between, ±s /eo outside. 3. zero both between and outside.

Electrical Energy and Capacitance

The Electric Field. The electric field E at a point in space is defined as an electric force F, acting on a positive test charge q divided by the magnitude.

Electric Field Lines - a “map” of the strength of the electric field. The electric field is force per unit charge, so the field lines are sometimes called.

III.A 3, Gauss’ Law.

Concept Summary Batesville High School Physics. Electric Fields  An electric charge creates a disturbance in the space around it - an electric field.

Electric Potential Difference. Electric Potential Energy (PE) Potential energy associated with a charged object due to its position relative to a source.

Review. Coulomb’s Law Units of Charge 1 Coulomb (C)

Ch 21 Electric Fields. Evidence of Electric Fields Sailors in the time of Columbus would occasionally witness the ends of their masts glowing. It would.

e-e- e-e- e-e- e-e- e-e- e-e- e-e- e-e- e-e- e-e- p+p+ p+p+ p+p+ Connecting two parallel plates to a battery produces uniform electric field  the electric.

Electric Energy and Capacitance

-Capacitors and Capacitance AP Physics C Mrs. Coyle.

Electric Charge Electric charge is measured in coulombs. The charge on an electron is _1.6x C. A positive charge is caused by a loss of electrons.

Electric Field Physics Overview Properties of Electric Charges Charging Objects by Induction Coulomb’s Law The Electric Field Electric Field Lines.

Capacitanc e and Dielectrics AP Physics C Montwood High School R. Casao.

● An electric field exists around any charged object. The field produces forces on other charged objects. ● The electric field is the force per unit charge.

Obtaining Electric Field from Electric Potential Assume, to start, that E has only an x component Similar statements would apply to the y and z.

Chapter 21 Electric Charge and Electric Field HW #4: Chapter 21: Pb.21,Pb.38, Pb.40, Pb.52, Pb.59, Pb.80 Due Friday, Feb 20.

Electrostatics.

ELECTRIC FIELDS, POTENTIAL DIFFERENCE & CAPACITANCE.

CHAPTER 26 : CAPACITANCE AND DIELECTRICS

Electric Fields Year 13. Electrostatic force Like charges repel, unlike charges attract How does this force act if charges are not in contact? –An electric.

Lecture 5 Dr. Lobna Mohamed Abou El-Magd The Electric Potential.

Parallel Plates.

Physics 212 Lecture 7, Slide 1 Physics 212 Lecture 7 Today's Concept: Conductors and Capacitance How are charges distributed on conductors? What is capacitance.

Electric Potential: Charged Conductor

Electric Fields. What is an Electric Field? One charged object can influence another charged object without any direct contact. We say a charged object.

The Electric Field. The electric field E at a point in space is defined as an electric force F, acting on a positive test charge q divided by the magnitude.

Key Points Potential is Inversely Proportional to distance Electric Field Strength is Proportional to the Inverse Square of the distance Equipotentials.

Electric Charge (1) Evidence for electric charges is everywhere, e.g.

Electric Field Lines Contents: Basic Concept Field Lines and point charges Field Lines and conductors.

Electric Charges, Forces and Fields

Week 1 - S2 Feb. 15 – 20, 2016 Fields 4.1.Electric Fields

Capacitor Two conductors carrying charges of equal magnitude but opposite sign form a capacitor. +Q -Q A parallel plate capacitor is a particularly common.

Electric Potential Energy & Capacitance

Molecular Description of Dielectrics

-Atomic View of Dielectrics -Electric Dipole in an Electric Field -Partially Filled Capacitors AP Physics C Mrs. Coyle.

Tribal Challenge Review Question!

Day 5: Objectives Electric Field Lines

Topic 9.3 Electric Field, Potential, and Energy

Lecture 5 : Conductors and Dipoles

Introduction to Capacitance

Electric Field.

Electric Potential: Charged Conductor

Electrical Energy & Capacitance Pgs

Relation Between Electric Potential V & Electric Field E

The field lines for a positive point charge

Chapter 21, Electric Charge, and electric Field

Presentation transcript:

April 7 AP Physics

AP Practice Exam April 28 ACT day 1 pm Not optional

In: An object of charge +q feels an electric force F E when placed at a particular location in an electric field, E. Therefore, if an object of charge –2q were placed at the same location where the first charge was, it would feel and electric force of a)–F E /2 b)–2F E c)–2qF E d)–2F E /q e)–F E /(2q)

Objective: To learn about static electricity: –Electric field –Electric potential energy –Electric potential –Capacitance –Parallel plate capacitors

Homework check 2, 9, 10, 11

Electric Field

Direction: The direction of the force a positive charge would feel. Strength: The field times the second charge equals the force a second charge would feel.

Electric Field E = F e q o F e = kqq r 2 E = kq r 2

Conducting spheres Electric field is zero everywhere inside the conducting material All excess charge is found on the surface of the material. The electric field just outside the conductor s perpendicular to the surface. Charge accumulates at points

Electric field between two plates Between two plates (except at the edges) the electric field is uniform.

An airplane is flying through a thundercloud at a height of m. If there are charge concentrations of C at a height of m within the cloud and 40.0 C at a height of 1000 m, what is the electric field at the aircraft? at the aircraft?

Electric field lines 1.Lines begin on positive charges and end on negative. 2.The number of lines leaving a positive charge or ending on a negative is proportional the the magnitude of the charge. 3.No lines can cross eachother 4.Lines are perpendicular to the surface of the conductor

Out: The figure shows the electric field lines for two point charges separated by a small distance. (a) Determine the ratio q 1 /q 2. (b) What are the signs of q 1 and q 2 ?