Electric fields around point charges Direction of E field is: Away from positive Toward negative.

Slides:

Advertisements

Similar presentations

Electric Forces and Fields

Advertisements

Chapter 21 Electric Charge and Electric Field. Charles Allison © 2000 Question An  particle with a charge +2e and a mass of 4m p is on a collision course.

Electric and Magnetic Fields Chapters 17 & 21. Electric Field Electric force, like gravitational force, is a field force Electric force, like gravitational.

…and all the pretty variations… F = k q 1 q 2 r2r2 E = k q 1 r2r2 U = k q 1 q 2 r V = k q 1 r.

What is Electricity? zFlow of electrons. zElectromagnetic force.

Electric Force Chapter Coulomb’s Law Coulomb’s Constant The proportionality constant k in Coulomb’s law is similar to G in Newton’s law of gravitation.

Universal Gravitation Newton Cavendish Examples Whiteboards.

IB Physics 12 Mr. Jean October 10 th, In class discussion: 1.Briefly explain the following with relation to charged particles or points of mass.

General Physics 2, Lec 3, By/ T.A. Eleyan 1 Additional Questions (Electric Field)

Electric Charge and Electric Field

Lecture 9 Coulomb’s law Electric field. 3.3 Coulomb’s Law Coulomb’s law gives the force between two point charges: The force is along the line connecting.

Electricity We will learn about 2 aspects of electricity 1)Charged objects apply forces to each other (like when a balloon sticks to a wall) 2)Circuits.

General Physics II, Lec 4, By/ T.A. Eleyan 1 Lecture 4 Discussion.

Daily Warm-Up How is the size of the force acting on two charges related to the distance between the charges? How is the size of the charges related to.

Honors Physics Mr. Payne April 30, Today: Uniform Fields – Gravitational and Electrical – Homework: Problems 5, 6, 11, 12, page 489 – (Problems.

Electric Potential Energy or Potential Difference (Voltage) Recall the idea of Gravitational Potential Energy: lifting an object against gravity requires.

Unit 10: Electric Fields An electric force is a field force. Recall the difference between a field force and a contact force. ◦ Field forces act through.

Electrical & Gravitational Force. Newton’s Universal Law of Gravitation Every object in the universe attracts every other object with a force that for.

Chapter 17 Electric Potential Energy and the Electric Potential.

Electric Fields.

Lesson 4 Electric Field Theory (Looks pretty cool, not an electric field.)

Announcements  1 st EXAM TOMORROW!!  NO New Homework CQ9: a) 3b) 1 28:18: a) 2.00 x 10 5 N/C, 200 Vb) 2.00 x 10 5 N/C, 400 V 28.20: a) 1.0 x 10 3 Vb)

Chapter 17 Review. 1. When silk is rubbed onto a glass rod, this leaves a _______________ charge on the glass rod. 1. positive 2. negative 3. neutral.

My Chapter 16 Lecture Outline.

Electrical Charges and Coulomb’s Law

Part 3.  The electric field can push AND pull charges  Because there are two types of charges (+ and -)  The gravitational field can only pull  Only.

Chapter 18 Summary Essential Concepts and Formulas.

Electric Fields and Forces

 Assess. Statements due Monday, 10/20/14.

Electric Fields. The gravitational and electric forces can act through space without any physical contact between the interacting objects. Just like the.

Lecture3 Dr. lobna Mohamed Abou El-magd

Force Fields Objective: TSW understand and apply the concept of a force field by calculating the field, the force and motion of a particle in a field.

Electricity Chapter 17. Chapter 17- Electric Charge The two different kinds of Electric charges are positive and negative Like charges repel – unlike.

More Fields Electric Fields at a Location vs. Electric Fields around a Point Charge.

23.4 The Electric Field.

Electric Field.

Chapter 20 Static Electricity Electrostatics - The study of electrical charges that can be collected and held in one place.

Day 3: Electric Fields. Objectives Static Electricity Electric Field Properties 1 & 2 –Dimensional Electric Field Calculations of Point Charges.

Electric Charges Conduction: Transfer of a charge easily. Induction: Influence transfer of a charge. (polarization of a charge) Insulator: Does not transfer.

Physics 314 Unit 10 Warmups: Warmup: Thur Jan. 21 What is the total charge in Coulombs for a sample of 25 sulfate ions? (SO 4 has a charge.

Electric field. How is one charge able to exert an electrical force on another charge even though the two charges are not in contact with each other?

Review for the Chapter test Page 1 Page 2 Page 3 Page 4.

Uniform Electric Field between Parallel Charged Plates Constant force on a charged particle Constant force on a charged particle.

January What is a “force” field anyway? In physics, a ‘force’ field describes an area where objects experience a force-at-a-distance such as.

Newton’s Law of Universal Gravitation

Kristia Mae D. Echin. COULOMB’S LAW Helps you calculate the forces on any two electric charges.

The Solar System The Moon The Earth The Sun How do they move? Why doesn’t the Earth fly away? Photos by NASA.

IB Physics 12 Topic 5 – 2 Electro-statics & fields.

Write down an equation for the force between two point charges, Q1 and Q2 , separated by a distance r (1) A speck of dust has a mass of 1.0 × 10–18 kg.

Charles Allison © 2000 Chapter 21, Electric Charge, and electric Field.

4/1/16Oregon State University PH 213, Class #31 Force Fields “Action at a distance” (across “empty” space)—how is this possible? This happens with gravitational.

Warm-Up: April 6/7, 2016  A black sphere with charge of 3.3 µC is pulled towards a gold sphere 4.7 cm away. The attractive force is 6.2 N. What is the.

How strong are Coulomb forces? Electron and proton in a hydrogen atom Compare electric and gravitational forces electron and proton m e = 9.11x kg,

1. What is the force on, and the electric field surrounding (magnitude and direction) an electron if it is accelerated upward at 5.20x10 15 m/s/s? (4.74x10.

Gravitational Potential Energy Gravitational potential energy (near the surface of Earth) depends on the mass and height of an object.

Physics Section 16.2 Apply Coulomb’s Law

Electric Field.

Electric Force Classwork

Electric Fields and Potential

Electric Fields and Potential

Gravitational Potential Energy

Electric Field Physics Mr. Dellamorte.

Electric Fields.

Forces and Fields Lesson 6

A ‘field’ is a region in space where a force may act.

Gravitational Fields It is often useful to relate the Force experienced to a specific location. For instance, a 30 kg person would experience 294 N of.

Electrostatics Seo Physics.

V (in Volts) = Potential EPE (in Joules) = Electric Potential Energy

2. An ion accelerated through a potential difference of 115 V experiences an increase in kinetic energy of 7.37 × 10–17 J. Calculate the charge on the.

Presentation transcript:

Electric fields around point charges Direction of E field is: Away from positive Toward negative

Fields around points of mass or charge a, b, c are points, Q is a charge

Example: What is the electric field 2.0 m to the right of a -21 μC charge? 47,000 N/C left

6.54E6 N/C to the left What is the electric field at the x? (Magnitude and direction) AC  C -187  C 72.1 cm E A = kq A = 8.958E6 N/C to the left (away from +) r 2 E C = kq C = 2.423E6 N/C to the right (toward -) r 2 = E6 N/C E6 N/C = -6.54E6 N/C (Left) 11.2 cm x

Whiteboards: Field relative to points 11 | 2 | 323

71.5 N/C to the left E for a point charge: E = kq r 2 k = 8.99x10 9 Nm 2 C -2, q = -1.45x10 -6 C, r = 13.5 m E = N/C away from the charge, or to the left (toward the negative charge) Vera Similitude measures the electric field 13.5 m to the right of a  C charge. What electric field in what direction?

+.11  C E for a point charge: E = kq r 2 k = 8.99x10 9 Nm 2 C -2, E = 2,120 N/C, r =.67 m q = 1.06x10 -7 C = +.11  C. It is a positive charge as the E-field is away from it Vesta Buhl measures an electric field of 2,120 N/C, 67 cm from a charge of unknown value. The electric field is away from the charge. What is the charge?

1.1 x 10 7 m g for a point mass: g = Gm r 2 G = 6.67x Nm 2 kg -2, g = 3.4 N/kg, m = 5.98x10 24 kg r = m = 10.8 x 10 6 m (r e = 6.38 x 10 6 m) Amelia Rate measures a gravitational field of 3.4 N/kg. What distance is she from the center of the earth? (Me = 5.98 x kg. )

12  m E for a point charge: E = kq r 2 k = 8.99x10 9 Nm 2 C -2, E = 10 N/C, q = 1.602x C r = x10 -5 m = 12  m Tara Bull measures an electric field of 10. N/C what distance from an electron?