Basics of electricity Current (I, measured in amperes) flows from – to + Voltage (V, measured in volts) reflects the potential difference between a negatively.

Slides:

Advertisements

Similar presentations

Advertisements

Electric currents Chapter 18. Electric Battery Made of two or more plates or rods called electrodes. – Electrodes are made of dissimilar metals Electrodes.

What is Electricity? Electricity is the flow of moving electrons. When the electrons flow it is called an electrical current.

Energy on the Hill Internship What it is: an internship program funding GT students to engage with energy-related policy development on Capitol Hill for.

Resistance in Electrical Systems

Circuits & Electronics

Circuits Electric Circuit: a closed path along which charged particles move Electric Current: the rate at which a charge passes a given point in a circuit.

4.3 Notes Resistance in Electrical Systems. Properties of Materials Conductors Have a large ability to conduct electric current They contain many free.

Electric Current & Electricity Calculations

Current Electricity. Current A measure of the flow of charge. Ampere: Electrical measurement of the flow of electrons. 1 Ampere = 1 Coulomb/second. 1.

=Ohms_Law Voltage (Volts) Current (Amps) Resistance (Ohms or Ω)

Current Electricity Chapter 22 the charges start to move.

Electrical Potential (Voltage) Answers (Page 303)

Ch. 34 Electric Current.

Electrical Current Mr. Fleming.

Current - rate at which charge passes a given point.

Electricity. Electrical Potential Every charged particle has the ability to do work. They can exert a push or a pull on each other or another object by.

Electricity. What is electricity? Electric current – flow of electrons through a _______ Current (I) is measured by how many __________pass a given point.

4.2.3B Electrical Power What About Watts?. Power Law Moving electrons (current) requires ENERGY How much energy gets used depends on: Strength of push.

CHAPTER Static Electricity ElectricityCircuits Measurements & Units Do the Math 600.

Calculating Electricity

Ohm’s Law and Electrical Power

Electric Current and Ohms Law. Electric Current The continuous flow of electric charge –The two types of current are direct current (DC) and alternating.

ELECTRICAL COMPONENTS and CIRCUITS Instrumental Analysis II CTEC 1345.

Electric Circuits. Potential Electric Potential is just like gravitational potential It depends on –The distance from the source –The amount of charge.

Electricity. Electric Current The net movement of electric charges in a single direction Electrons in a material (metal wire) are in constant motion in.

Physics Chp 19. Electric Current Movement of charge Ampere A = C/s.

Electric Current. In this session we will, Review how we measure electric charge Discuss voltage and electric current Look at electric current in batteries.

Ohm’s Law Calculating Current, Voltage, and Resistance.

1 Chapter 20 Review activity! Fun in B208!.  A. Unit of energy  B. Unit of charge  C. Unit of current  D. Unit of voltage. 2 What is a coulomb?

Electric Circuits and terms Electric circuits move charges around to deliver energy.

 Electrical circuit: a closed loop where charged particles flow  Electrical current: a flow of charged particles (e - )  Direct current (DC): a flow.

Electrical Current and Circuits How Electricity Gets To Where It Is Going.

Ch. 7, 8, 9. Ch. 7 Electricity Electricity Electric Charge Positive and Negatives Conductors and Insulators Lightning Electric Current Circuits, Batteries,

Basics of electricity Current (I, measured in amperes) flows from – to + Voltage (V, measured in volts) reflects the potential difference between a negatively.

Methods of Charging Conduction – A Charged Object comes in CONtact with a neutral object. – The neutral object takes on the same Net Charge as the Charged.

P = V I (1a) P = R I 2 (1b) P = V 2 / R (1c) where P = power (Watts) V = voltage (Volts)voltage I = current (Amperes) R = resistance (Ohms)

What is Electricity??? Electric Charge Matter has both positive and negative particles (protons and electrons) Matter has both positive and negative.

Ohm’s Law Notes JAN 7. Vocabulary current : how quickly the electrons are flowing through the circuit; units: amperes (A) voltage : the electric potential.

Energy and Power. Energy The ability to do work. Measured in Joules.

Using a Mulitmeter A digital multimeter is a test tool used to measure two or more electrical values—principally voltage (volts), current (amps) and resistance.

Electric Current Chapter 34.2, 34.4, 34.5, and Notes.

Measuring Electricity. Electric Potential – the electrical energy that an electron possesses. Electric current is a measure of the rate at which the electric.

Power in Electrical Systems Power in Electrical Systems.

Chapter 6.3 Notes Electrical Power. Voltage causes charges to move in circuits. This movement creates work. How fast the charge does work is called Power.

Current Electricity, Ohm’s Law & Circuits. Current (I) The rate of flow of charges through a conductor Needs a complete closed conducting path to flow.

Current Electricity.

Electricity Cont… Turk.

Measurements in Electric Circuits

Voltage, Current, and Resistance

Power in DC Circuits.

Electricity - Current.

Electric Current Chapter 17.

Electric Current Chapter 34.

ELECTRICAL CURRENT.

Measurements in Electric Circuits

Why Make Electrons Flow Anyway?

Basic Electrical Calculations

Electric Current.

Electrical Current & Circuits

Modified by Mr. Wanninkhof

Physics 3 Electricity and Magnetism

Please bring your book tomorrow.

Ohm’s Law & Circuits Chapter 7.2 & 7.3.

Voltage Difference The difference in electrical potential between two places. Unit of measure = V (volts) Voltage causes current to flow through an electric.

Electric Power.

Announcement Ohm’s law video is due at midnight Makeup lab today

Electric Current Chapter 34.

Notes 7.3 : Calculating Electric Power + Electrical Energy

Presentation transcript:

Basics of electricity Current (I, measured in amperes) flows from – to + Voltage (V, measured in volts) reflects the potential difference between a negatively and positively charged material Resistance (R, measured in ohms) prevents flow of electrons; depends on material, distance, and temperature Ohm’s Law: V=R * I Ex: US uses 120V; toaster is 15ohms, so I=120/15 = 8 amps of current going through toaster Power = V * I Voltage fixed at 120V; so toaster has power of 120*8 = 960Watts (joules/s) Energy = P * time (this is what you pay for) Leave toaster on for 30min, then E = 960Watts * 0.5hr = kilowatt hours

voltage resistance current A clever analogy

US Oil Production is in decline; rest of the world to follow, but WHEN?

Peak Oil: not “if”, but “when”

Oil used since 1950 (R=7) Recall T 2 =70/R ?

1ZJ = J Global oil consumption = 0.18 ZJ/yr; so ~80 yrs supply of reserves

Quantifying OPEC oil reserves is a shell game! Nobody knows….

bp.com

COAL: a whole different ballgame of “have’s” and “have-not’s”