Unit D Review Electricity. How can you explain two charged objects “sticking” to one another? Opposite charges, movement of electrons!

Slides:

Advertisements

Similar presentations

Chapter 17.2 – Current electrical potential energy –

Advertisements

Electric Current Section 2.

CH 7 Electricity.

Chapter 19 Flow of Electricity Useful electricity requires moving electric charges You must do work to move a charged particle against an electric field.

Electricity & Magnetism Physical Science. Static Electricity Atoms are made of charged particles: – Electrons: orbit the nucleus of the atom and have.

Electricity. Let’s Review… Atoms have 3 subatomic particles Protons = positive Electrons = negative Neutrons = neutral Neutral Atom “Normal” state # Protons.

Chapter 20 Electricity. Section 1 Electric charge and static electricity.

Cells have positive and negative electrodes.

Electricity refers to the presence of electric current in wires, motors, light bulbs, and other devices. Electricity carries power. Power (P)

Electricity Foundations of Physics. Electricity The movement of charge from one place to another Requires energy to move the charge Also requires conductors.

Ohm’s law describes the relationship of current, voltage, and resistance.

ELECTRICITY NOTES. ELECTRICITY ELECTRICITY: form of energy that occurs when electrons move from place to place Electricity can form whenever (e - ) electrons.

Ohm’s law describes the relationship of current, voltage, and resistance.

CHAPTER 1 ELECTRICITY. ELECTRIC CHARGE Charges Exert Force Atoms are composed of particles with ______. The law of electric charges states that like.

Electricity Chapter 20.

P5 – Electric Circuits. Static Electricity When two objects are rubbed together and become charged, electrons are transferred from one object to the other.

Copyright © by Holt, Rinehart and Winston. All rights reserved. Section 1 Electrical Charge and Force  Indicate which pairs of charges will repel and.

Things you need to know… About the electricity and magnetism Unit Test.

Electric Circuits. Voltaic Cells A source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds.

Chapter 8 Ohm’s law describes the relationship of

A Unit 4 Review. When an object is charged, it has an imbalance of electrons. Static electricity is another term used to describe this. You can charge.

Circuits and Electronics. Circuits A circuit is a closed path through which a continuous charge can flow. A circuit is a closed path through which a continuous.

Electricity and Magnetism

Current Electricity. Electricity Electricity is the flow of electrons through a conducting material. Electricity is the flow of electrons through a conducting.

Electric Current Electrical current is the flow of electrons. Unlike static electricity, charges are in motion. Two types of Current I. Direct current.

Electric Current.

Section 2 Current. Voltage and Current Electrical Potential Energy: the ability to move an electrical charge from one point to another. Depends on position.

CHAPTER 1 ELECTRICITY. The amount of charge flowing past a point in a given time CURRENT.

ELECTRICITY AND MAGNETISM SERIES VS PARALLEL CIRCUITS.

A complete, unbroken path through which electric charges can flow.

ELECTRIC CURRENT. What is current electricity? Current Electricity - Flow of electrons What causes electrons to flow? When an electric force is applied,

Jeopardy Q 1 Q 2 Q 3 Q 4 Q 5 Q 6Q 16Q 11Q 21 Q 7Q 12Q 17Q 22 Q 8 Q 13 Q 18 Q 23 Q 9 Q 14 Q 19Q 24 Q 10 Q 15 Q 20Q 25 Final Jeopardy MagnetismTermsElectricityMixedCircuits.

Electric Circuits. Electric Circuit Is a closed path for the flow of electrons. Consists of: 1.Source of electricity 2.Wires to conduct the flow of.

Ch Electricity II. Electric Current  Cell and Battery  Potential Difference  Current  Resistance  Ohm’s Law.

 Electric Current- net movement of electric charges in a single direction ◦ Example- powering electronics.

Electric Current/Electrical Energy. Current The rate at which charges pass a given point. The higher the current, the greater the number of charges that.

Electricity Review Questions. How are charges transferred through conduction? By Direct Contact.

Introduction to Electricity

CHAPTER 17 ELECTRICITY. ELECTRIC CHARGE Charges Exert Force Atoms are composed of particles with charges. The law of electric charges states that like.

16.2 Current I CAN: -RECALL THAT CURRENT IS MEASURED IN AMPERES (A), WHICH IS EQUAL TO ONE COULOMB OF CHARGE PER SECOND (C/S). -RECALL THAT POTENTIAL DIFFERENCE.

Electric Charge & Static Electricity Like charges repel one another while opposite charges are attracted to one another. Law of Electric charge--

Static Electricity Circuits Part Deux Safety In the House

Static vs Current Circuit Elements Resistance is V / I Energy switch Make and use How to generate.

Circuit Electricity. Electric Circuits The continuous flow of electrons in a circuit is called current electricity. Circuits involve… –Energy source,

Electric Current Electric current – The net movement of electric charges in a single direction through a wire or conductor. Voltage difference – The force.

Electricity Cont… Turk.

Electricity & Magnetism

Electricity 7-2 Electric Current.

Physics Unit 5 - Electricity

Electricity and Magnetism

7-2: Electric Current.

Ch Electricity II. Electric Current (p ) Circuit

Electric Current and Electrical Energy

Electricity 2 objectives.

Electric Current.

Electric Circuits An electrical device that provides a path for electric current to flow. Previously, we studied electrostatics, which is the study of.

Electric Energy Notes.

Ch. 6 Electricity (Unit 5b)

Probe the fundamental principles and applications of electricity

Electric Current 6.2.

Electricity Test Review

Electrons in Circuits. Electrons in Circuits Parts of a circuit Battery Closed switch (allows electrons to flow) Open switch (impedes flow) Wire Resistor.

Electric Circuits An electrical device that provides a path for electric current to flow. Previously, we studied electrostatics, which is the study of.

Electric Charge Electric Charge Rules:

Electricity II. Electric Current Circuit Potential Difference Current

Electric Current 13.2.

Electricity I. Electric Charge Static Electricity Conductors

Presentation transcript:

Unit D Review Electricity

How can you explain two charged objects “sticking” to one another? Opposite charges, movement of electrons!

What are some common examples of static electricity? Static cling (laundry), lightning, rubbing a balloon on your hair!

How is current electricity different from static electricity? It is in motion!

A good conductor will typically have ________ resistance. Low

How does a fuse work? When too much electricity passes through it, a thin strip of metal inside of it will melt, causing the circuit to break.

What type of energy conversion occurs inside a thermocouple? Thermal energy  electrical energy

What makes up a basic electrochemical cell? An electrolyte (liquid or paste) and two electrodes (different metals!)

What is an ohmic resistor? Resistance is constant regardless of current or voltage applied.

What is the difference between a semiconductor and a superconductor? Superconductor – practically no resistance!

What is the purpose of a switch in a circuit? Completes the circuit; allows electricity to flow.

A wire has a resistance of 20 ohms. If 10A of current passes through the wire, what is its voltage? V = I x R = 10A x 20 ohms = 200 V

On a strand of Christmas lights, one bulb is burnt out but the rest of the strand still works. How can this be so? Parallel circuit.

What is the difference between a cell and a battery? A battery is made up of a number of cells.

Provide an example of a load that might be found in a circuit? Lightbulb, motor, electrical device, etc.

What is energy? The ability to do work!

What is the SI unit for energy? Joule, J

What type of energy conversion is occurring in a BBQ? Chemical potential (propane)  Thermal

What is an electromagnet? When a magnet is passed through a coil of wire, an electrical current is produced OR When a current is applied to a coil of wire with a specific core, a magnetic field is generated.

A hairdryer is connected to a 120 V outlet, with 15A of current flowing through it. What is the power of the hairdryer? P = I x V = 15A x 120V = 1800 W

How does thickness of a wire affect resistance? Thinner wire = more resistance!

How do you calculate efficiency of an electrical device? (Useful output energy / Total input energy) x 100