Current Electricity Current, Power and Energy. Current Electricity Current Electricity is what you get when you plug something into the wall. There are.

Slides:

Advertisements

Similar presentations

Electric Field and Electric Potential (Voltage). Electric Field Any charged object has an invisible field around it. Any charged object has an invisible.

Advertisements

Factors Affecting Resistance

ELECTRICAL SYSTEMS 21.3.

Quarter 3 Test 2 Review. 1 Typically, household appliances operate at 120 volts. What is the current flowing in the circuit of a microwave when the resistance.

 Rate at which energy is consumed or produced  Changed into other forms of energy  Measured in WATTS (W)

Power and Energy. Power Power means work over a time period Units = Watts Electric power is measured in Watts.

Measuring Electrical Energy Lesson 11. Measuring Electrical Energy What is Energy? Energy- The ability to do work Electrical Energy- The energy transferred.

 POWER: the rate of change in energy; also the rate at which work is done or energy is transformed  JOULE (J): the unit for measuring energy  WATT.

Circuits & Electronics

13 Electric Circuits. Chapter Outline 1 Electric Circuits and Electric Current 2 Ohm’s Law and Resistance 3 Series and Parallel Circuits 4 Electric Energy.

13 Electric Circuits.

Chapter 8 – Electricity and Magnetism

Electric Current & Electricity Calculations

Power. Your Utilization of Electricity Have you ever heard the word Watt before? Have you ever used the word Kilowatt before? When? When a person is speaking.

Current Electricity Chapter 22 the charges start to move.

20.3 Electric Circuits

Electrical Current Mr. Fleming.

Physics Day 23 Aim: How much power does a toaster use? LO: Calculate power use for V, I and R LO: Calculate energy use from power LO: Kilowatt-hour is.

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.

Units Of Electricity Ashfield Direct Learning Holly Millar Ks4 Energy.

Bellringer Two AA batteries in series will provide a voltage of how many volts?

Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.

Chapter-13 Outline 1Electric Circuits and Electric Current, I 2 Ohm’s Law, ΔV = I R; and Resistance, R. 3 Series and Parallel Circuits 4 Electric Energy.

Electric Current: Basics. Current Electricity Current electricity is like current in a river. A high or fast river current means the water is rushing.

Energy and Cost. Energy  Energy: the ability to do work all appliances need energy to work ex.a hair dryer needs to be plugged in to get energy to work.

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.

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

Chapter 6 Power. Chapter 6.1 Power in Mechanical Systems.

Physical Science Mr. Barry. Series circuits have one loop through which current can flow.

Parallel Circuit A parallel circuit is one that has two or more paths for the electricity to flow – similar to a fork in a river A parallel circuit is.

Electric Power Lesson 2.5. Key Concepts How do you calculate electric power? What factors are used to determine how people pay for electrical energy?

Good Day! 3/11/2016 Starter: What is electricity all about? How do we measure it? Starter: What is electricity all about? How do we measure it? Today.

Electrical power pg. 49. Objectives Use the equation for electrical power to solve circuit problems. Understand basic concepts for home electricity usage.

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

ELECTRIC POWER. POWER AT HOME When you plug in a device, you are using alternating current (AC) Both (+) and (-) … alternates at 60x /second (60Hertz)

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.

Electric Current Everything (water, heat, smells, …) flows from areas of high concentration to areas of lower concentration. Electricity is no different.

Hosted by Mr. McDevitt Voltage CurrentPower Short Circuit

Dynamic Electricity. What is a conductor and insulator? A conductor is a material which allows an electric current to pass. Metals are good conductors.

Buying electricity. Calculating the units of electricity The amount of electrical energy (i.e. the amount of electricity) used by an appliance depends.

Power in Electrical Systems Power in Electrical Systems.

Chapter 34 Notes Electric Circuits. Electric Current Intro Voltage is an “electric pressure” That can produce a flow of charge, or current, within a conductor.

Electrical Circuits Section 7.3. Electrical Circuits Circuits rely on generators at power plants to produce a voltage difference across the outlet, causing.

Electrical Systems Series Circuits Parallel Circuits Electrical Power.

Electric Current: Basics

What are electric circuits?

Electric Current Chapter 34.

Electricity 7-3 Circuits.

By: Michelle, Yeovani, Jalen

Section 3.3 Measuring Energy Input and Output 1

9.2 The Power of Electricity

Chapter-13 Outline Electric Circuits and Electric Current, I

Electricity Current.

Section 3.3 Measuring Energy Input and Output 1

Basic Electrical Calculations

Ch Electricity II. Electric Current (p ) Circuit

Power Consumption & Cost

But what was this “electricity”?

16.2 Current and Voltage.

Warm up A light needs 3 amps to produce light the resistance of the bulb is 1.5 ohms. How many batteries do you need if each battery is 1.5 volts? What.

Power, Energy and Electrical Safety

Notes 7.3 : Calculating Electric Power + Electrical Energy

20.1 Short circuit A short circuit is a parallel path in a circuit with zero or very low resistance. Short circuits can be made accidentally by connecting.

Hosted by Mrs. McDevitt 

Presentation transcript:

Current Electricity Current, Power and Energy

Current Electricity Current Electricity is what you get when you plug something into the wall. There are lots of electrons in one place, but they are moving along wires and through electronic devices. That is the difference between static and current electricity.

Voltage Voltage: is like the Potential Energy of Electricity. It’s what moves the electrons along. Ex: A 9volt battery is what pushes the electrons through a toy car. Variable: VUnit: Volt (V)

Current Current is how fast electrons are moving through an object (like a TV or a light bulb). Variable: I Unit: Ampere (A) Current in electricity is similar to current in a river…

Current The faster we can move electrons, the more Current ( I ) we can get. Current can be calculated using:

Example A wire carries 10 Coulombs of charge past a certain spot every 2 seconds. What is the current in the wire?

Electric Power Electric Power is how quickly an object uses electricity to do work. Variable: PUnit: Watt (W) Most appliances are rated in Watts to tell you how much energy they use.

Electric Power Electric Power can be calculated using the formula: Electronics with higher power ratings make your power bill go up!

Example If a 1000W microwave is plugged into a 120V outlet, what kind of current will it draw?

Power Bills The power company measures how much power you use in Kilowatts (kW), and they charge by the hour (h). THIS IS THE ONLY TIME we’ll use kW and h for our units: when calculating a Power Bill.

Power Bills Power Companies charge a certain amount of money per Kilowatt-Hour. Your Power Bill comes from: Amt. of Bill ($) = (rate)(P)(t)

Example If you leave your 1500W TV on for a whole day, how much will it cost you if the power company charges $/kWh? (Remember 1kW=1000W)

Review Our three new equations are: Charge (Q) – Coulombs (C) Current (I)- Amperes (A) Voltage (V)- Volts (V) Power (P)- Watts (W) Power Bill ONLY Power (P)- Kilowatts (kW) Time (t)- hours (h)