Static Electricity 1 1020 C Static Electricity Chapter 10 part 1.

Slides:



Advertisements
Similar presentations
Electric Charge What are the different kinds of electric charge?
Advertisements

 Static electricity is what makes:  clothes stick together when they come out of a dryer  gives you a shock with you touch a metal doorknob.
Chapter 19 It’s Electric!. Going Back to Basics A charge is not something you can see, weigh, or define, but you can observe how charge affects the behavior.
AP Physics 1 Chapter Electric Charge and Force
Electrostatics 1 Personal Ad Electron rich…seeks Electron poor for bonding, conducting, and long term relationship. Resistance a plus.
Chapter 10 Electricity Section 10.1 Static Electricity
Electricity. Electrical Charge and Forces  Electrical charge is the property that causes protons and electrons to attract or repel one another.  There.
Electrostatics.
Electrostatics Deals with electric charges at rest, or static electricity on the surface of an object.
Electrostatics.
Electric Charge and Electric Force. What is an Electric Charge? Protons have positive (+) electric charge Electrons have negative (-) electric charge.
Aim: How can we explain electrostatics? Do Now: Why is it that when you walk on a carpeted surface with socks on, this happens:
Electrostatics …the branch of physics that studies the nature of charges that’s not moving.
Electronic Air Cleaners (Static Electricity) Physics 10 Kenneth N. Barish.
CHAPTER-21 Electric Charges. CHAPTER-21 Electric Charges Topics to be covered:  Types of electric charge  Forces among two charges (Coulomb’s law) 
Electric Charge and Electric Force. What is an Electric Charge? Protons have positive (+) electric charge Electrons have negative (-) electric charge.
 What do you think the term Electric Charge means?
STATIC ELECTRICITY How Would you define Static Electricity?
Electric Charges and Static Introduction to Electricity.
Electricity and Magnetism Chapter 7 Overview. Electricity Charge of proton Positive Charge of proton Positive Charge of electron Negative Charge of electron.
Static Electricity. Electric Charge General Properties –Electrons carry negative charge and exist outside of the nucleus –Protons carry positive charge.
Ch 16.1 Electric Charge and Static Electricity
What is Electric Charge?  Which particles inside atoms have a charge?  A: Protons (+) Electrons (–)  Charge is a physical property—if an object has.
Ch. 5 Sec.1 Notes. Electric Charges The law of electric charges states that like charges repel and opposite charges attract. _ _ _.
Make careful observations and record them on your whiteboards. Make careful observations and record them on your whiteboards. Take a few minutes to talk.
Electricity Chapter 13.
Electricity CHAPTER 6. Structure of Atoms  Atoms are made of 3 particles  Protons-Positively charges  Found in Nucleus  Neutrons-No Charge  Found.
Electric charge is a fundamental property of matter, like mass. Electric charge is a fundamental property of matter, like mass. Objects are either positive,
Characteristics of Electricity
The study of electrical charges at rest
Physics Unit 4 Electricity and Magnetism. 2 Forms of Electricity 1.Static – a build up of charge on an object 2.Current – a steady flow of electric charge.
Electrostatics.
Some Thought Questions: Why do some TVs build up so much dust very quickly? Why does saran wrap stick to your bowl when it is just plastic and nothing.
Jag Mark How do like charges interact? unlike charges?
Electricity and Magnetism Chapter 7 Overview. Electricity Charge of proton Positive Charge of proton Positive Charge of electron Negative Charge of electron.
Electricity 7.1 Electric Charge. Journal 03/04/2011 Diagram an atom with 2 protons, 2 neutrons, and 2 electrons. Label each type of particle and the charge.
Charge & Electricity Unit 6 – Lecture 1.
Static Electricity By: Annette Miles.
Static Electricity Chapter 7. Static Charges I n this chapter we will learn:  Atoms with equal negative and positive charges are called neutral  Atoms.
Chapter 32: Electrostatics
Pick up a copy of the notes from the front Think about this question and be ready to answer if called on… – How are gravity and electrostatic force similar?
ELECTROSTATICS.
Circuits & Magnetism Study Guide
ElectricitySection 1 Section 1: Electric Charge and Force Preview Key Ideas Bellringer Electric Charge Transfer of Electric Charge Induced Charges Charging.
CHAPTER-21 Electric Charges. CHAPTER-21 Electric Charges Topics to be covered:  Types of electric charge  Forces among two charges (Coulomb’s law) 
Electrostatics Physics. What is electrostatics? Electricity at rest Electricity at rest Involves forces and behaviors of electric charges Involves forces.
Electrostatics ELECTROSTATICS. History J.J. Thomson – discovered negatively charged particles which he called electrons Ernest Rutherford – discovered.
Static Electricity, Electric Forces, Electric Fields.
© 2010 Pearson Education, Inc. Conceptual Physics 11 th Edition Chapter 22: ELECTROSTATICS Electrical Forces and Charges Conservation of Charge Coulomb’s.
Electrostatics Notes (614) Charge! Have you ever walked across the carpet and gotten “shocked” when you touched the doorknob?
Electric Charge & Force Static Electricity. Electric Charge An electrical property of matter that creates a force between objects Ex. When you get shocked.
Electric Charge and Static Electricity. Electric Charge Electric charge is a property of protons and electrons. Protons have a positive charge. Electrons.
Electric Charge & Static Electricity. How do Charges Interact? Atoms contain charged particles called electrons and protons. The charge on a proton is.
Electric Charge & Static Electricity. Electric Charge The electric charge of an object is determined by the atoms that make up the object. a Physical.
STATIC ELECTRICITY. ATTRACT OBJECTS WITH A POSITIVE CHARGE WILL DO THIS TO AN OBJECT WITH A NEGATIVE CHARGE (OPPOSITES ATTRACT/PULL TOGETHER).
Static Charge and the Van de Graaf Generator. Static Charge Latin word “Stasis” which means “Stays” Latin word “Stasis” which means “Stays” Objects are.
Electric Forces and Fields Electric Charge. Electric charge – an electrical property of matter that creates a force between objects Experience movement.
What IS STATIC ELECTRICITY?
Electrostatics Chapter 20.
Electrostatics How can an object be charged and what affect does that charge have upon other objects in its vicinity?
Electric Charge Chapter 16 in your book.
18.1 Electric Charge and Static Electricity
November 27: Static Electricity − Coulomb’s law
Electric Charge and Static Electricity
Electronic Air Cleaners
November 26: Static Electricity − Coulomb’s law
ELECTRICITY: Electric Charge
Electrostatics Charge
The materials are electrically charged.
Electricity Electric Charge.
Presentation transcript:

Static Electricity C Static Electricity Chapter 10 part 1

Static Electricity 2 Introductory Question A woman rubs her feet on the carpet and gives a shock to her identical twin. If the twin also rubs her feet on the carpet before being touched, the shock will be A woman rubs her feet on the carpet and gives a shock to her identical twin. If the twin also rubs her feet on the carpet before being touched, the shock will be A. larger B. smaller C. the same size

Static Electricity 3 Observations about Static Electricity Static electricity builds up on non-metallic things Static electricity builds up on non-metallic things Objects with static charge may cling or repel Objects with static charge may cling or repel Static electricity can lead to shocks Static electricity can lead to shocks Static electricity can make your hair stand up Static electricity can make your hair stand up

Static Electricity 4 4 Questions about Static Electricity Why do some clothes cling while others repel? Why do some clothes cling while others repel? Why do sticky clothes stick to uncharged walls? Why do sticky clothes stick to uncharged walls? Why do clingy clothes crackle as they separate? Why do clingy clothes crackle as they separate? Why do some things lose their charge quickly? Why do some things lose their charge quickly?

Static Electricity 5 Question 1 Why do some clothes cling while others repel? Why do some clothes cling while others repel?

Static Electricity 6 Electric Charge (Part 1) Charges appear in two types: positive & negative Charges appear in two types: positive & negative Like charges repel Like charges repel Opposite charges attract Opposite charges attract Two charges push (or pull) on one another Two charges push (or pull) on one another with forces that are exactly equal in magnitude with forces that are exactly equal in magnitude but exactly opposite in direction. but exactly opposite in direction. The forces increase as the separation decreases The forces increase as the separation decreases

Static Electricity 7 Electric Charge (Part 2) Electric charge Electric charge is a conserved quantity, is a conserved quantity, is measured in coulombs, is measured in coulombs, is is quantized in multiples of the fundamental charge. One fundamental charge is 1.6  coulombs Charge is an intrinsic property of matter Electrons are negatively charged Protons are positively charged Each has one fundamental charge

Static Electricity 8 Net Charge An object’s net charge An object’s net charge is the sum of its individual charges is the sum of its individual charges and tends to be zero or nearly zero. and tends to be zero or nearly zero. A neutral object has A neutral object has zero net charge zero net charge and contains as many + charges as – charges. and contains as many + charges as – charges.

Static Electricity 9 Charge Transfers Contact can transfer charge between objects Contact can transfer charge between objects The object with the stronger affinity for electrons The object with the stronger affinity for electrons becomes negatively charged upon contact becomes negatively charged upon contact will the other object becomes positively charged. will the other object becomes positively charged. These oppositely charge objects attract one another. These oppositely charge objects attract one another. Rubbing the objects together ensures Rubbing the objects together ensures excellent contact between their surfaces excellent contact between their surfaces and consequently substantial charge transfer. and consequently substantial charge transfer.

Static Electricity 10 Introductory Question (revisited) A woman rubs her feet on the carpet and gives a shock to her identical twin. If the twin also rubs her feet on the carpet before being touched, the shock will be A woman rubs her feet on the carpet and gives a shock to her identical twin. If the twin also rubs her feet on the carpet before being touched, the shock will be A. larger B. smaller C. the same size

Static Electricity 11 Question 2 Why do clingy clothes stick to uncharged walls? Why do clingy clothes stick to uncharged walls?

Static Electricity 12 Electric Polarization A neutral wall contains countless charges A neutral wall contains countless charges that respond to any nearby charged object. that respond to any nearby charged object. When a negatively charged sock nears a wall, When a negatively charged sock nears a wall, the wall’s positive charges shift toward the sock, the wall’s positive charges shift toward the sock, the wall’s negative charges shift away from it, the wall’s negative charges shift away from it, and the wall becomes electrically polarized. and the wall becomes electrically polarized. The charged sock clings to the polarized wall The charged sock clings to the polarized wall

Static Electricity 13 Question 3 Why do clingy clothes crackle as they separate? Why do clingy clothes crackle as they separate?

Static Electricity 14 Voltage Charge has electrostatic potential energy (EPE) Charge has electrostatic potential energy (EPE) Voltage measures the EPE per unit of charge Voltage measures the EPE per unit of charge Raising the voltage of positive charge takes work Raising the voltage of positive charge takes work Lowering the voltage of negative charge takes work Lowering the voltage of negative charge takes work Voltage is measured in joules/coulomb or volts Voltage is measured in joules/coulomb or volts

Static Electricity 15 Separating Opposite Charges Separating opposite charges takes work, Separating opposite charges takes work, so the positive charges undergo a rise in voltage so the positive charges undergo a rise in voltage and the negative charges undergo a drop in voltage. and the negative charges undergo a drop in voltage. Positive charge at high voltage can release EPE Positive charge at high voltage can release EPE by moving to lower voltage by moving to lower voltage and it often does this by way of a discharge or spark! and it often does this by way of a discharge or spark! Negative charge behaves oppositely, Negative charge behaves oppositely, releasing EPE by moving to higher voltage. releasing EPE by moving to higher voltage.

Static Electricity 16 Question 4 Why do some things lose their charge quickly? Why do some things lose their charge quickly?

Static Electricity 17 Conductors and Insulators All objects contain positive and negative charges All objects contain positive and negative charges but most of those charges are immobile. but most of those charges are immobile. Insulators have no mobile electric charges Insulators have no mobile electric charges Conductors have mobile electric charges, Conductors have mobile electric charges, which are usually electrons (e.g., metals) which are usually electrons (e.g., metals) but are occasionally ions (e.g., salt water). but are occasionally ions (e.g., salt water). Conductors can lose net charges easily. Conductors can lose net charges easily.

Static Electricity 18 Summary about Static Electricity Even neutral objects contain countless charges Even neutral objects contain countless charges Charge can be transferred during contact Charge can be transferred during contact Clothes often develop net charges during drying Clothes often develop net charges during drying Oppositely charged clothes cling to one another Oppositely charged clothes cling to one another and spark as separation affects their voltages. and spark as separation affects their voltages. Conductivity tends to let objects neutralize. Conductivity tends to let objects neutralize.